Hearty Spaghetti Casserole

Ultimate Easy Baked Spaghetti Recipe: A Family Favorite Casserole

Baked spaghetti is more than just a meal; it’s a comforting classic reimagined, transforming simple spaghetti into a hearty, cheesy casserole that’s bursting with flavor. By baking this beloved pasta dish, you achieve a rich depth and a satisfying texture that traditional stovetop spaghetti simply can’t offer. It’s the perfect solution for a comforting family dinner, a crowd-pleasing potluck contribution, or a brilliant make-ahead meal for busy weeknights.

Baked spaghetti on white plate with a fork

What is Baked Spaghetti?

Baked spaghetti is essentially a delightful pasta casserole. It takes cooked spaghetti, combines it with a rich tomato-based sauce, savory vegetables, and often a protein, all topped with a generous layer of melted cheese, then baked until bubbly and golden. The baking process allows all the flavors to meld beautifully, creating a deeper, more satisfying taste and a wonderfully comforting texture. It’s a fantastic way to elevate a simple weeknight pasta dish into something truly special.

Why You’ll Love This Easy Baked Spaghetti Recipe

This baked spaghetti recipe isn’t just delicious; it’s incredibly practical and versatile, making it a true kitchen hero. Here’s why it will quickly become a favorite in your household:

  • Ultimate Comfort Food: Warm, cheesy, and satisfying, it hits all the right notes for a hearty meal.
  • Family-Friendly: Kids and adults alike adore baked spaghetti, making mealtime battles a thing of the past.
  • Easy to Make: With straightforward steps, even novice cooks can master this dish.
  • Perfect for Meal Prep: It reheats beautifully, making it ideal for packed lunches or quick dinners throughout the week.
  • Freezer-Friendly: Double or triple the recipe and freeze portions for future busy days, ensuring you always have a homemade meal on hand.
  • Highly Customizable: Easily adapt it to dietary preferences or whatever ingredients you have on hand.
  • Budget-Friendly: Made with common, inexpensive ingredients, it’s a cost-effective way to feed a crowd.

⏲️ Time Needed

While baked spaghetti might sound like it takes a long time, the active prep is surprisingly quick. Since it requires cooking the pasta and simultaneously preparing the sauce before baking the casserole, you can be efficient in the kitchen. Plan on dedicating less than 10 minutes to sautéing the onion, bell pepper, and garlic while your spaghetti is boiling. This parallel cooking approach keeps your total hands-on time minimal. After assembly, the casserole will need an additional 30 minutes in the oven to bake until the cheese is perfectly melted and the dish is heated through. This makes for a fantastic total of about 40 minutes from start to finish for a truly delicious homemade meal!

🥘 Ingredients for Success

The beauty of this baked spaghetti lies in its simple, accessible ingredients. You likely have many of these staples in your pantry already! Using quality ingredients will always elevate your dish, but don’t be afraid to make substitutions based on what you have and your family’s preferences.

  • Spaghetti: The foundation of our dish! We recommend classic spaghetti, but other long pastas like linguine or fettuccine, or even shorter pastas like ziti or penne, can work too.
  • Aromatics: One onion (chopped), one green bell pepper (chopped), and 2 cloves of garlic (minced). These form the flavor base, providing a fragrant and savory foundation for the sauce.
  • Canned Tomatoes: A 14 oz can of diced tomatoes with juice (undrained) adds a chunky texture and bright tomato flavor.
  • Canned Mushrooms: A 4 oz can of mushrooms (drained) brings an earthy umami note. Feel free to use fresh mushrooms, sautéed with the other vegetables, if preferred.
  • Pizza Sauce: A 16 oz jar of pizza sauce provides a quick and flavorful base. For an even richer, more homemade taste, consider using our delicious Crockpot Marinara Sauce. If you have about 3-½ cups of homemade marinara, you can easily substitute it for the pizza sauce and canned tomatoes in this recipe, simplifying your ingredient list.
  • Seasonings: Italian seasoning, salt, and pepper to taste. Don’t underestimate the power of good seasoning to tie all the flavors together.
  • Mozzarella Cheese: 1 cup of grated mozzarella cheese for that irresistible gooey, melty top. Feel free to use a blend of mozzarella and other cheeses like provolone or cheddar for added complexity.
  • Turkey Bacon: 8 slices of crisp-cooked turkey bacon, crumbled. This adds a salty, smoky crunch. For a vegetarian version, simply omit the turkey bacon. If you prefer, you can use regular bacon, ground beef, or Italian sausage.

📋 Step-by-Step Instructions for Perfect Baked Spaghetti

Making this baked spaghetti casserole is a breeze, requiring just a few simple steps and about 10 minutes of active prep time. Follow these instructions for a perfectly cheesy and flavorful meal:

  1. Cook the Pasta: Begin by cooking your spaghetti according to the package instructions. For baked pasta dishes, it’s often a good idea to cook the pasta until it’s al dente or even slightly undercooked (by about 1-2 minutes). This prevents it from becoming mushy during the baking process, ensuring a pleasant texture in the final casserole. Once cooked, drain thoroughly.
  2. Sauté the Aromatics: While the pasta is cooking, heat a skillet over medium heat. Add a tablespoon of olive oil (optional) and sauté the chopped onion, minced garlic, and chopped green bell pepper until they are tender and fragrant, typically 5-7 minutes. This step is crucial for building the flavor base of your sauce.
  3. Prepare the Sauce Base: In a large mixing bowl, combine the undrained canned tomatoes, drained canned mushrooms, and the jar of pizza sauce. Stir well to ensure all ingredients are evenly distributed.
  4. Combine and Assemble: Add the cooked and drained spaghetti, the sautéed vegetables (onion, garlic, green pepper), and your Italian seasoning, salt, and pepper to taste into the bowl with the sauce. Toss everything gently until the spaghetti is thoroughly coated in the sauce and vegetables are well distributed. Transfer this mixture into a greased 9×13 inch casserole dish. Evenly spread the grated mozzarella cheese over the spaghetti mixture, then sprinkle the crumbled crisp-cooked turkey bacon on top.
  5. Bake to Perfection: Preheat your oven to 350°F (175°C). Bake the casserole for 30 minutes, or until the cheese is beautifully melted and bubbly, and the entire casserole is heated through and slightly golden at the edges.

Serve hot and enjoy this comforting, flavorful baked spaghetti!

Tips for the Perfect Baked Spaghetti

Achieving a truly outstanding baked spaghetti is easy with a few insider tips. These suggestions will help you maximize flavor and texture, ensuring a delicious result every time:

  • Al Dente Pasta is Key: As mentioned in the instructions, slightly undercooking your spaghetti by 1-2 minutes from package directions will prevent it from turning mushy in the oven. It will finish cooking in the sauce as it bakes.
  • Don’t Skimp on Seasoning: Taste your sauce before combining it with the pasta. Adjust salt, pepper, and Italian seasoning to your liking. A pinch of red pepper flakes can add a nice kick!
  • Shred Your Own Cheese: Pre-shredded cheese often contains anti-caking agents that can affect how it melts. Shredding your own mozzarella from a block will result in a creamier, stretchier, and more delicious cheesy topping.
  • Layering for Flavor and Texture: While this recipe mixes everything together, some people prefer layering: a base of sauce, then spaghetti, then more sauce, then cheese. Experiment to find your favorite method!
  • Let it Rest: After baking, allow the casserole to rest for 5-10 minutes before serving. This helps the dish set, making it easier to serve and preventing it from falling apart.
  • Grease Your Dish: Always lightly grease your casserole dish to prevent sticking and make cleanup easier.

Variations & Customizations

This baked spaghetti recipe is a fantastic canvas for your culinary creativity. Feel free to adapt it to your taste, dietary needs, or whatever ingredients you have on hand. Here are some popular variations:

  • Meat Lovers’ Delight:
    • Ground Beef or Turkey: Brown 1 lb of ground beef or turkey with the onions and peppers, drain any excess fat, then mix it into the sauce.
    • Italian Sausage: Use sweet or spicy Italian sausage (casings removed) instead of ground meat for an extra flavor boost.
    • Shredded Chicken: Add cooked, shredded rotisserie chicken for a quick and easy protein addition.
  • Vegetarian Power-Up:
    • Extra Veggies: Sauté additional vegetables like chopped zucchini, yellow squash, bell peppers of different colors, or spinach with your onions and garlic.
    • Lentils: Cooked green or brown lentils can be added to the sauce for a hearty, protein-rich vegetarian option.
  • Cheese, Please!:
    • Cheese Blends: Combine mozzarella with Parmesan, provolone, cheddar, or even a touch of ricotta cheese for a creamier texture in the layers.
    • Cream Cheese or Ricotta Layer: For an even richer, lasagna-like experience, spread a layer of whipped ricotta or softened cream cheese over the spaghetti before adding the final layer of mozzarella.
  • Sauce Enhancements:
    • Spicy Kick: Add red pepper flakes to your sauce for a bit of heat.
    • Herbs: Fresh basil, oregano, or parsley chopped and stirred into the sauce can really brighten the flavors.
    • Creamy Sauce: Stir in a splash of heavy cream or a spoonful of cream cheese into your tomato sauce for a richer, creamier consistency.
  • Different Pastas: While spaghetti is traditional, this recipe works well with other pasta shapes like ziti, penne, rotini, or even egg noodles.

❄️ Freezer Instructions & Make-Ahead Tips

This baked spaghetti recipe is an absolute champion for meal prep and freezer stocking! It freezes exceptionally well, making it a smart choice to double or even triple the recipe. Having a homemade, delicious meal ready to go in your freezer is a huge time-saver on busy days.

Freezing Before Baking:

This is often the best method for make-ahead convenience and a fresher-tasting result upon reheating. Follow these steps:

  1. Prepare the spaghetti casserole completely up to the point of baking, but do not bake it.
  2. For best results, slightly undercook the pasta (reduce cooking time by 1-2 minutes) to ensure it doesn’t get mushy when reheated.
  3. Assemble the casserole in a freezer-safe dish (aluminum foil pans work great for this!).
  4. Cover the dish tightly with a layer of plastic wrap, then a layer of aluminum foil to prevent freezer burn.
  5. Label clearly with “Baked Spaghetti: Thaw completely, then bake for 30 minutes at 350°F (175°C), or until bubbly and heated through.” You might need an extra 10-15 minutes if baking from partially frozen.
  6. Freeze for up to 3 months.

Freezing After Baking:

If you have leftovers or prefer to bake first, you can also freeze the cooked casserole:

  1. Allow the baked spaghetti to cool completely.
  2. Portion into individual freezer-safe containers or wrap the entire casserole tightly with plastic wrap and then foil.
  3. Label and freeze for up to 3 months.

Thawing and Reheating:

  • From Frozen (Unbaked): Thaw the casserole overnight in the refrigerator. Once thawed, remove the plastic wrap and foil, then bake as directed (350°F for 30-45 minutes).
  • From Frozen (Baked): Thaw overnight in the refrigerator. Reheat covered with foil in a 350°F oven for 20-30 minutes, or until heated through. You can uncover for the last 5-10 minutes if you want to crisp up the cheese. For individual portions, reheat in the microwave or oven until hot.

Recipe

Baked spaghetti on white plate with a fork

Easy & Cheesy Baked Spaghetti Casserole

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This Easy Baked Spaghetti Casserole is a delicious and cheesy twist on a classic favorite, perfect for family dinners or meal prep!
AuthorMary Ann
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Course Main Dish, Dinner, Casserole
Cuisine American, Italian-American

Servings 6 servings
Calories 244

Ingredients

  

  • 1 onion, chopped
  • 1 green pepper, chopped
  • 2 cloves garlic, minced
  • 14 oz can diced tomatoes with juice, undrained
  • 4 oz can sliced mushrooms, drained
  • 16 oz jar pizza sauce
  • 8 oz spaghetti
  • Italian seasoning, to taste
  • salt and pepper to taste
  • 1 cup grated mozzarella cheese
  • 8 slices crisp cooked turkey bacon, crumbled (optional for vegetarian)
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Instructions

  • Cook the spaghetti pasta according to package instructions until al dente. Drain well.
  • While the pasta is cooking, sauté chopped onion, minced garlic, and chopped green bell pepper in a skillet over medium heat until tender (about 5-7 minutes).
  • In a large bowl, combine the undrained canned tomatoes, drained canned mushrooms, and the jar of pizza sauce. Stir to mix thoroughly.
  • Add the cooked spaghetti, sautéed vegetables, Italian seasoning, salt, and pepper to taste into the bowl with the sauce. Toss gently to combine all ingredients evenly. Transfer to a greased 9×13 inch casserole dish. Top with grated mozzarella cheese and crumbled crisp-cooked turkey bacon (if using).
  • Bake in a preheated oven at 350°F (175°C) for 30 minutes, or until the cheese is melted and bubbly and the casserole is heated through. Let rest for 5-10 minutes before serving.

Notes

For a delicious vegetarian version, simply omit the turkey bacon. You can add extra vegetables like zucchini or spinach for more flavor and nutrients.

This recipe is excellent for meal prep and freezes beautifully! If you plan to freeze it (either before or after baking), we recommend slightly undercooking the pasta by a minute or two. Wrap the casserole tightly in freezer paper and/or foil. Label with “Baked Spaghetti: Thaw, then cook for 30-45 minutes at 350ºF (175°C)” for unbaked, or “Baked Spaghetti: Thaw, then reheat for 20-30 minutes at 350ºF (175°C)” for already baked.

Marinara Sauce Substitution: If you have 3-½ cups of our delicious Crockpot Marinara Sauce or another favorite homemade marinara, you can use it in place of the pizza sauce and canned tomatoes.

Nutrition per serving

Calories: 244 calCarbohydrates: 25 gProtein: 15 gFat: 10 gSodium: 1109 mgFiber: 4 gSugar: 8 gNet Carbohydrates: 21 g

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🥗 Serving Suggestions

Baked spaghetti is a hearty meal all on its own, but pairing it with a few simple sides can elevate your dinner into a complete and delightful feast. Here are some excellent ideas to complement the rich flavors of your casserole:

  • Garlic Bread or Breadsticks: Perfect for soaking up any extra sauce and adding a satisfying crunch.
  • Fresh Green Salad: A crisp salad with a light vinaigrette provides a refreshing contrast to the rich pasta, balancing the meal beautifully.
  • Steamed or Roasted Vegetables: Simple green vegetables are always a good choice. Try our seasoned green beans, steamed broccoli florets, tender sautéed sugar snap peas, or roasted asparagus.
  • Caprese Salad: A classic Italian side with fresh mozzarella, ripe tomatoes, basil, and a balsamic glaze is a wonderful, fresh accompaniment.
  • A Light Soup: A clear broth-based soup or a simple minestrone can start the meal off perfectly without being too heavy.

FAQs About Baked Spaghetti

Here are some frequently asked questions to help you master your baked spaghetti:

Can I use a different type of pasta?
Absolutely! While spaghetti is traditional, you can easily substitute other pasta shapes like ziti, penne, rigatoni, or even elbow macaroni. Just be sure to cook it al dente.
How long does baked spaghetti last in the refrigerator?
Properly stored in an airtight container, baked spaghetti will last for 3-4 days in the refrigerator.
Can I add meat to the sauce?
Yes, and it’s highly recommended if you’re not making it vegetarian! Brown 1 pound of ground beef, Italian sausage, or ground turkey with the onions and bell peppers. Drain any excess fat before mixing it into the sauce.
Is this recipe gluten-free friendly?
To make this recipe gluten-free, simply use your favorite gluten-free spaghetti. Ensure that your pizza sauce and any other canned ingredients are also certified gluten-free, as hidden gluten can sometimes be present in processed foods.
How can I make the casserole creamier?
For an extra creamy touch, you can stir about ½ cup of ricotta cheese or softened cream cheese into the spaghetti mixture before transferring it to the casserole dish. Some also like to add a splash of heavy cream to the tomato sauce.
Can I use fresh mushrooms instead of canned?
Yes! If using fresh mushrooms (about 8 oz sliced), sauté them with the onions, garlic, and green pepper until they release their liquid and become tender. They will add an even fresher flavor to the dish.

📌 Pin This Recipe

Don’t forget to save this incredible Baked Spaghetti recipe for later! Pin it to your favorite dinner ideas or comfort food boards on Pinterest so you can easily find it whenever you’re craving a hearty, cheesy, and satisfying meal. Share the love with friends and family!

Top photo is baked spaghetti on white plate with a fork. Bottom image is baked spaghetti in a clear glass baking dish. Text Baked Spaghetti Add Salt & Serve formerly Menus4Moms