Easy Baked Spaghetti Casserole Recipe

There’s something incredibly comforting about a warm, home-cooked meal, and this easy baked spaghetti casserole recipe embodies just that. Perfect for family dinners or potlucks, this dish brings together the rich flavors of seasoned marinara sauce, gooey melted cheese, and perfectly baked spaghetti. Let’s dive into how this simple recipe can become a staple in your kitchen.
I remember the first time I made this recipe was during a chilly autumn evening, with my family gathered around the kitchen. We were all eager for something warm and satisfying, and this dish didn’t disappoint. My youngest even exclaimed it was like ‘pizza spaghetti,’ and it quickly became a weeknight favorite that brought everyone to the table, time and again.
Why You’ll Love This Recipe
This recipe is perfect for busy families and anyone looking for a delicious, hearty meal with minimal fuss. The combination of flavors results in a dish that’s savory, cheesy, and incredibly satisfying. Plus, it’s a one-pan wonder, meaning less cleanup and more time enjoying your meal. You can also easily adapt it to your personal taste or dietary needs.
Ingredients Notes
The ingredients are simple yet impactful. Sourcing a quality marinara sauce can elevate the flavor significantly, or you can substitute with a homemade version for a personal touch. Feel free to swap ground beef with turkey or keep it vegetarian by adding more vegetables. Pre-cooked spaghetti helps save time and ensures perfect texture every time.
Recipe Steps
Step 1
Preheat your oven to 375°F (190°C) while you prepare the ingredients. This ensures that your casserole bakes evenly and thoroughly.
Step 2
Cook the spaghetti according to package instructions. Drain and set it aside. This gives it time to cool slightly and prevents it from sticking together.
Step 3
In a large skillet over medium heat, brown your choice of ground meat. Add diced onions and garlic for extra flavor. Once fully cooked, mix with marinara sauce and Italian seasoning.
Step 4
Layer half of the cooked spaghetti in a greased casserole dish. Top with half of the meat sauce, then sprinkle with a generous layer of mozzarella cheese. Repeat with the remaining spaghetti, sauce, and cheese layers.
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Step 5
Bake in the preheated oven for 25-30 minutes or until the cheese is bubbly and golden brown. Allow it to sit for a few minutes before serving to set the layers.
Storage Options
This casserole can be stored in an airtight container in the refrigerator for up to 3-4 days. For longer preservation, slice the leftovers into portions and freeze them. To reheat, thaw in the refrigerator overnight and warm in a preheated oven at 350°F (175°C) until hot.
Variations & Substitutions
For a lighter version, substitute whole wheat pasta and use a low-fat cheese blend. Add any of your favorite vegetables like mushrooms, spinach, or bell peppers for an added nutritional boost. Swap beef for lentils to make it completely vegetarian.
Serving Suggestions
This casserole shines as a main dish for dinner gatherings. Pair it with a side of garlic bread and a green salad for a complete meal. It’s also a great option for bringing to parties, as it can be made ahead and travels well.
Frequently Asked Questions
Can I prepare this casserole in advance?
Yes, you can assemble the casserole up to 24 hours ahead. Keep it covered in the refrigerator, and bake just before you’re ready to serve.
What kind of pasta works best?
Traditionally, spaghetti is used, but you can substitute with penne, rotini, or any pasta you have on hand. They all work well and soak up the sauce beautifully.
How can I make this dish spicier?
If you enjoy a bit of heat, add red pepper flakes to the sauce or use a spicy marinara variant. You can also serve with a bit of hot sauce on the side for those who prefer it hotter.
This recipe is not just about creating a meal; it’s an experience that brings family and friends together. Whether you’re a seasoned cook or trying your hand at something new, this easy and delicious baked dish is sure to be a hit every time.

Easy Baked Spaghetti Casserole Recipe
Ingredients
Main Ingredients
- 16 oz spaghetti uncooked
- 1 lb ground beef lean
- 1 medium onion chopped
- 2 cloves garlic minced
- 24 oz marinara sauce store-bought or homemade
- 2 cups mozzarella cheese shredded
- 0.5 cup parmesan cheese grated
- 1 tsp Italian seasoning
- 0.5 tsp salt to taste
- 0.25 tsp black pepper freshly ground
Instructions
Preparation Steps
- Preheat your oven to 350°F (175°C).
- Cook the spaghetti according to package instructions until al dente. Drain and set aside.
- In a large skillet, cook the ground beef over medium heat until browned. Add chopped onion and minced garlic, and sauté until the onion is translucent.
- Stir in the marinara sauce, Italian seasoning, salt, and pepper. Let simmer for 5 minutes.
- In a large baking dish, layer half of the cooked spaghetti, half of the sauce mixture, and half of the mozzarella and parmesan cheeses. Repeat the layers.
- Bake in the preheated oven for 20-25 minutes, or until the cheese is melted and bubbly.
- Let it cool for a few minutes before serving. Enjoy!