Golden, Bubbly Oven Baked Spaghetti

Oven baked spaghetti turns a box of pasta, a quick meat sauce, and a few layers of cheese into a deep, bubbling casserole that looks like you fussed all afternoon.

The oven does the real work, so you can walk away and set the table while the top turns golden and crisp.

Why This Baked Spaghetti Stays on My Dinner Rotation

The top blisters under the broiler until the mozzarella pulls in long strings, while the ricotta layer keeps the middle creamy and a little tangy. The spaghetti itself soaks up the beefy tomato sauce but still has a toothsome bite.

I make it when I need a one-dish dinner that feels a little more special than a regular pot of pasta. It holds beautifully, so leftovers are just as good the next day.

Ingredients

• 12 oz spaghetti: regular, not thin spaghetti, holds up better in the oven
• 1 lb ground beef: 85% lean keeps it moist without making the sauce greasy
• 1 medium yellow onion, diced
• 3 cloves garlic, minced
• 28 oz can crushed tomatoes: plain, no added herbs
• 1 tsp dried oregano
• 1 tsp salt, divided, plus more for the pasta water
• 1/4 tsp black pepper
• Pinch of sugar, optional, to round out the acidity
• 15 oz whole-milk ricotta
• 1 large egg
• 1/2 cup grated Parmesan, divided
• 2 cups shredded low-moisture mozzarella
• Fresh basil leaves, for serving (optional)

Variations / Substitutions

• Ground turkey or Italian sausage: swap the beef for turkey for a lighter sauce, or use bulk Italian sausage for extra fennel flavor. If you use sausage, skip the oregano.
• Gluten-free pasta: any sturdy gluten-free spaghetti works, just undercook it by a minute so it doesn’t turn mushy during baking.
• No ricotta: a 16 oz tub of small-curd cottage cheese, drained and blended smooth, gives a similar creamy layer.
• Dairy-free: use plant-based ricotta and shreds you trust for melting; the top won’t brown exactly the same, but it will still be comforting.

If you want a saucy stovetop version without the oven step, the Classic Spaghetti Bolognese on the site hits the same deep tomato and meat notes.

How To Make Oven Baked Spaghetti

Step 1: Boil and Drain the Spaghetti

Bring a large pot of salted water to a boil. Add the 12 oz spaghetti and cook until it is just shy of al dente, about 8 minutes; it will finish cooking in the oven. Drain well and set aside.

The pasta should still have a faint white core when you bite into it. That firmness prevents a mushy casserole later.

Step 2: Brown the Beef and Simmer the Sauce

While the pasta boils, heat a large skillet over medium-high. Add the 1 lb ground beef and cook, breaking it up with a spoon, until no pink remains, about 6 minutes. Stir in the diced onion and cook another 3 minutes until it softens, then add the 3 minced cloves of garlic and cook 30 seconds more.

Pour in the 28 oz can of crushed tomatoes, the 1 tsp oregano, 1/2 tsp of the salt, the 1/4 tsp black pepper, and the pinch of sugar if using. Bring to a simmer, then lower the heat and let it bubble gently for 10 minutes so the flavors come together. Taste the sauce and add a little more salt if it needs it.

The sauce will look slightly thicker and deepen in color as it cooks. Don’t rush this part, it’s where the beefy backbone of the dish forms.

Step 3: Mix the Ricotta Layer

In a medium bowl, stir together the 15 oz ricotta, the egg, the remaining 1/2 tsp salt, and 1/4 cup of the grated Parmesan. Mix until the egg is fully incorporated and the mixture is smooth.

It will feel spreadable but not runny. That egg is what keeps the ricotta layer from turning watery in the oven.

Step 4: Layer the Casserole

Set your oven rack to the middle position and preheat the oven to 375°F (190°C). Lightly oil a 9×13-inch baking dish.

Spread half of the drained spaghetti in the dish. Dollop all of the ricotta mixture over the pasta and use the back of a spoon to press it into an even layer. Top with the remaining spaghetti, then pour the meat sauce over everything, spreading it to the edges.

Scatter the 2 cups of shredded mozzarella and the remaining 1/4 cup Parmesan over the top.

Step 5: Bake and Broil Until Golden

Bake the casserole for 20 minutes. The sauce should be bubbling around the edges and the cheese fully melted.

Switch the oven to broil and move the dish under the broiler for 2 to 3 minutes, just until the cheese is blistered in spots and deeply golden. Watch it closely so it doesn’t burn.

Let the casserole rest 5 minutes on the counter before slicing. The layers will set up enough to hold their shape, and that first scoop brings up a tangle of pasta, creamy ricotta, and stretchy mozzarella.

A Few Tips for the Best Baked Spaghetti

• Keep the pasta quite firm when you boil it. The baked spaghetti absorbs liquid from the sauce, so starting with al dente noodles gives you the right texture at the table.
• Whole-milk ricotta and low-moisture mozzarella matter here. Part-skim ricotta can turn grainy, and fresh mozzarella will release too much water.
• Let the casserole rest before you serve it. Five minutes off the heat makes the difference between a sloppy scoop and a slice that holds its shape.
• This dish is a great make-ahead. Assemble it completely, cover, and refrigerate up to a day in advance. Add 10 minutes to the covered bake time to heat it through.

Bake times by dish:

Storing Leftover Baked Spaghetti

• Refrigerate: Tuck leftovers into an airtight container for up to 4 days. The flavors meld even more overnight.
• Reheating: Warm single portions in the microwave, or cover the dish with foil and reheat in a 350°F (175°C) oven until hot in the middle.

What To Serve With Oven Baked Spaghetti

A simple green salad with a sharp vinaigrette cuts through the richness in just the right way. Garlic bread is the obvious side, but toasted ciabatta rubbed with a cut garlic clove works without stealing the show.

Frequently Asked Questions

Can I make this without meat?

Yes. Skip the beef and use a 24 oz jar of good marinara mixed with sautéed mushrooms for a hearty meatless version.

My spaghetti turned out a little dry. What went wrong?

The pasta likely absorbed more liquid than expected during baking. Next time, stir a 1/2 cup of water into the sauce before pouring it over the layers.

Can I freeze this casserole?

Assemble the dish without baking, wrap it tightly, and freeze for up to 3 months. Bake straight from frozen, covered, for about 50 minutes, then uncover and broil as directed.

Do I have to boil the spaghetti first?

Boiling gives the most reliable texture. If you want to skip it, you can layer uncooked spaghetti with an extra 1 1/2 cups of water in the sauce, cover tightly, and bake at 375°F (190°C) for 45 minutes before uncovering and broiling. The result is softer but still tasty.

Oven Baked Spaghetti Recipe

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 45 minutes mins

Total Time 1 hour hr

Servings: 6 servings

Calories: 660

Ingredients Method Notes

Ingredients

  

• 12 oz spaghetti
• 1 lb ground beef (85% lean)
• 1 medium yellow onion, diced
• 3 cloves garlic, minced
• 28 oz can crushed tomatoes
• 1 tsp dried oregano
• 1 tsp salt, divided, plus more for pasta water
• 1/4 tsp black pepper
• Pinch of sugar (optional)
• 15 oz whole-milk ricotta
• 1 large egg
• 1/2 cup grated Parmesan, divided
• 2 cups shredded low-moisture mozzarella
• Fresh basil leaves (optional)

Method

 

1. Boil spaghetti in salted water until just shy of al dente, about 8 minutes. Drain and set aside.
2. Brown the ground beef in a skillet over medium-high, breaking it up, about 6 minutes. Add onion and cook 3 minutes, then garlic for 30 seconds. Stir in crushed tomatoes, oregano, 1/2 tsp salt, pepper, and sugar. Simmer 10 minutes.
3. Mix ricotta, egg, remaining 1/2 tsp salt, and 1/4 cup Parmesan until smooth.
4. Preheat oven to 375°F (190°C). Layer half the spaghetti, all the ricotta mixture, remaining spaghetti, meat sauce, then top with mozzarella and remaining 1/4 cup Parmesan in a 9×13-inch baking dish.
5. Bake 20 minutes. Switch to broil and broil 2 to 3 minutes until golden and bubbling. Rest 5 minutes, then slice and serve.

Notes

The casserole needs 5 minutes to set after baking, so count that into your timing. If the top browns too fast under the broiler, tent loosely with foil and keep an eye on it.