Recipe

Cheesy Oven Spaghetti

Saucy baked spaghetti with a bright tomato meat sauce, a creamy ricotta layer, and a bubbly mozzarella top that gets crisp around the edges.

By Matt Campbell

•

4.8

A bubbling casserole dish of baked spaghetti topped with melted mozzarella and golden brown cheese spots, sitting on a light stone countertop with a wooden spoon nearby

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Oven spaghetti is what happens when regular spaghetti decides it wants a cozy sweater. You still get the twirlable noodles and that bright tomato comfort, but the oven gives you the best extras: melty cheese, crisp edges, and a sliceable situation that makes leftovers feel like a win instead of an obligation.

This version keeps ingredients easy to find and the steps low-stress. We build a quick meat sauce with garlic and a pinch of red pepper, toss it with spaghetti, then add a simple ricotta layer for creamy pockets. The top goes full blanket mode with mozzarella and Parmesan, and the oven handles the rest.

A simple lineup of ingredients for baked spaghetti including spaghetti, marinara, crushed tomatoes, ricotta, mozzarella, Parmesan, onion, garlic, and herbs arranged on a kitchen counter

Why It Works

It stays saucy. A little pasta water and a brief simmer keep the bake from drying out.
Cheese in layers, not just on top. Ricotta (or cottage cheese) melts into creamy pockets so every slice tastes rich.
That baked edge magic. The exposed noodles and cheese get golden and crisp, which is basically the reward for turning on the oven.
Weeknight flexible. Use ground beef, Italian sausage, turkey, or go meatless with mushrooms and extra herbs.

Pairs Well With

Storage Tips

Refrigerator: Cool completely, then store in an airtight container for up to 4 days. The flavors get even better on day two.

Freezer: Wrap portions tightly or freeze in a lidded container for up to 2 to 3 months for best quality. Thaw overnight in the fridge for best texture.

Reheat: For the best results, reheat covered in a 350°F oven until hot (about 20 to 25 minutes for a medium portion). For faster reheating, microwave with a splash of water or sauce and cover loosely so it stays steamy, not sad.

A glass storage container holding a square portion of leftover baked spaghetti with melted cheese on top, with the lid set beside it on the kitchen counter

Common Questions

Do I have to cook the spaghetti first?

Yes, but cook it just to al dente. Aim for noodles that are still quite firm when you bite one. They will finish cooking in the oven, and overcooked pasta turns the whole thing soft in a way nobody asked for.

How do I keep baked spaghetti from drying out?

Three things help a lot: toss the pasta with enough sauce, add a little reserved pasta water, and bake it covered for most of the time. Then uncover at the end to brown the cheese.

Can I make this ahead?

Absolutely. Assemble the casserole, cover, and refrigerate up to 24 hours. When baking from cold, add about 10 to 20 minutes to the covered bake time. You are looking for a casserole that is bubbling around the edges and hot in the center.

What can I use instead of ricotta?

Cottage cheese works great and is very weeknight-friendly. If you want it smoother, blitz it briefly in a blender or food processor.

Can I use a jar of sauce?

Yes. I still recommend sautéing garlic and tomato paste first if you have five extra minutes. It makes jarred sauce taste like it had a plan.

Matt Campbell

I have always had a huge passion for the culinary arts, people, working as a team, and so on. I wanted to pursue my love for cooking initially at Virginia Commonwealth University with a culinary arts degree; however, I instead decided to apply myself and acquire more practical skills. My end goal is to eventually open my own restaurant or similar establishment.

Kitchen Essentials

Large pot for boiling pasta
Colander
Large skillet or Dutch oven
9 x 13-inch baking dish
Mixing bowl (for ricotta layer)
Aluminum foil
Microplane or grater (for Parmesan, optional but nice)

Oven spaghetti is one of those dishes that feels like a group project, but in a good way. You do a little stirring, a little layering, then the oven takes over and you suddenly look like you tried harder than you did. It is also my favorite kind of leftover because it reheats like a casserole and eats like pasta. Big comfort, low drama, crisp cheesy corners. That is the whole pitch.

Cheesy Oven Spaghetti

(4.8 Reviews)

Prep Time 20 minutes

Cook Time 40 minutes

Total Time 1 hour

Servings 8

Ingredients

1 pound spaghetti
1 tablespoon olive oil
1 pound ground beef (or Italian sausage, or ground turkey)
1 small yellow onion, finely chopped
4 cloves garlic, minced
2 tablespoons tomato paste
1 teaspoon Italian seasoning
1/4 teaspoon crushed red pepper flakes (optional)
24 ounces marinara sauce (1 jar)
14.5 ounces crushed tomatoes (1 can)
1/2 cup reserved pasta water (use as needed)
1 to 1 1/2 teaspoons kosher salt, plus more for pasta water
1/2 teaspoon black pepper
1 1/2 cups ricotta cheese (or cottage cheese)
1 large egg
1/2 cup grated Parmesan cheese, divided
3 cups shredded mozzarella, divided
2 tablespoons chopped fresh parsley or basil (optional, for serving)

Instructions

Heat the oven. Preheat to 375°F. Lightly grease a 9 x 13-inch baking dish.
Cook the spaghetti. Bring a large pot of well-salted water to a boil. Cook spaghetti 2 minutes shy of the package directions. It should be still quite firm. Reserve 1/2 cup pasta water, then drain.
Build the sauce. While the pasta cooks, heat olive oil in a large skillet over medium heat. Add ground beef and cook until browned, breaking it up as you go. Add onion and cook 3 to 4 minutes until softened. Stir in garlic and cook 30 seconds.
Boost the flavor fast. Stir in tomato paste, Italian seasoning, and red pepper flakes. Cook 1 minute to toast the paste a bit.
Simmer. Add marinara and crushed tomatoes. Start with 1 teaspoon kosher salt (jar sauces vary a lot), plus pepper. Simmer 5 to 8 minutes. Taste and add more salt if it needs it. If it looks thick, stir in a splash of reserved pasta water. You want it saucy.
Mix the ricotta layer. In a bowl, stir together ricotta, egg, 1/4 cup Parmesan, and 1 cup mozzarella.
Toss pasta + sauce. Add drained spaghetti to the sauce and toss until fully coated. If needed, add a bit more reserved pasta water so it stays loose.
Layer. Spread half the sauced spaghetti in the baking dish. Dollop the ricotta mixture over it and gently spread. Add the remaining spaghetti.
Top with cheese. Sprinkle on remaining 2 cups mozzarella and remaining 1/4 cup Parmesan.
Bake. Cover tightly with foil and bake 20 minutes. Uncover and bake 10 to 15 minutes more until bubbly and lightly golden. The center should be hot. If you like to check, aim for about 165°F in the middle.
Rest, then serve. Let it rest 10 minutes so it slices clean. Finish with parsley or basil if you want to look like you had it together the whole time.