Creamy Baked Alfredo and Spaghetti Sauce Pasta

This creamy baked Alfredo and spaghetti sauce pasta is the kind of dinner that makes everyone ask for seconds.

It’s a big, bubbly casserole with layers of rich Alfredo, meaty marinara, and a blanket of melted cheese. Most of the work happens on the stovetop, then the oven does the rest.

Why This Baked Pasta Works

The combination of two sauces in one dish sounds like extra work, but it’s actually a shortcut to a deeply satisfying pasta bake. The Alfredo coats the noodles so they stay tender and creamy, while the spaghetti sauce brings that familiar tangy, meaty depth. Baking everything together with cheese on top gives you those golden, crispy edges everyone fights over.

I keep coming back to this one on busy nights because I can use a good jar of marinara and still end up with a dish that tastes like Sunday dinner.

Ingredients

• 1 lb ground beef: use 85/15 for enough fat to flavor the sauce without making it greasy.
• 1 small yellow onion, diced
• 3 cloves garlic, minced: divided, half for the meat sauce and half for the Alfredo.
• 1 (24 oz) jar marinara sauce: pick your favorite, or use homemade if you have it.
• 1 tsp Italian seasoning
• Salt and black pepper
• 8 oz penne or rigatoni pasta: short pasta with ridges holds the sauce best.
• 4 tbsp unsalted butter
• 1 cup heavy cream
• 1 cup freshly grated Parmesan cheese: divided, ¾ cup for the Alfredo and ¼ cup for topping.
• 1 ½ cups shredded mozzarella cheese

Variations / Substitutions

• Ground turkey or Italian sausage: either works in place of the beef. Turkey keeps it lean; sausage adds a spiced, savory note.
• Vegetarian: skip the meat and sauté 8 oz sliced mushrooms with the onion, then stir the marinara into the pan. The mushrooms add a meaty texture without any beef.
• Half-and-half: you can use it instead of heavy cream, but the sauce may be slightly thinner. Whisk a little longer to help it thicken.
• Pasta shape: ziti, mostaccioli, or medium shells all hold the sauce just as well as penne.

My classic baked ziti recipe is another great option when you want something simpler.

How to Make Baked Alfredo and Spaghetti Sauce Pasta

Step 1: Brown the Meat

Preheat your oven to 375°F (190°C). In a Dutch oven or large oven-safe skillet, cook the 1 lb ground beef over medium-high heat, breaking it apart, until no longer pink, about 5 minutes. Add the diced onion and half the minced garlic (reserve the rest for the Alfredo) and cook until the onion softens, 3 to 4 minutes more. Stir in the jar of marinara sauce and the Italian seasoning, season with salt and pepper, and let it simmer while you make the Alfredo.

The meat sauce should be thick and vibrant. If it looks too thin, let it bubble for a few extra minutes to reduce. That way, the casserole won’t turn out watery.

Step 2: Whisk Together the Alfredo Sauce

In a separate saucepan, melt the 4 tbsp butter over medium heat. Add the remaining garlic and cook until fragrant, about 30 seconds. Pour in the 1 cup heavy cream and bring to a gentle simmer. Whisk constantly for 2 minutes, then remove from heat and stir in ¾ cup of the Parmesan until smooth.

The sauce will thicken as it cools slightly. It should coat the back of a spoon. Avoid boiling hard after adding the cheese or the sauce may split.

Step 3: Boil the Pasta

Bring a large pot of salted water to a boil and cook the 8 oz pasta according to package directions until just al dente, about 1 minute less than the package says. Drain and return to the pot.

A slightly firm bite is key; the pasta will continue to cook in the oven and absorb sauce without turning mushy.

Step 4: Layer the Casserole

Pour the Alfredo sauce over the hot pasta and stir until every piece is coated. Spread half the pasta mixture into a greased 9×13 baking dish (or keep it in the same oven-safe skillet if it’s large enough). Spoon the meat sauce evenly on top, then cover with the remaining pasta. Scatter the mozzarella and the reserved ¼ cup Parmesan over everything.

Don’t worry if the layers aren’t perfect. A little mixing at the edges only makes for better bites. I like to press down gently so the sauce seeps into every nook.

Step 5: Bake and Serve

Bake, uncovered, for 25 to 30 minutes, until the cheese is melted and bubbly and the edges have started to crisp. Let it rest for 5 minutes before spooning onto plates.

That short rest keeps the casserole from turning into a puddle. Dish it up while it’s still hot, and watch the cheese pull in long, gooey strands.

Tips for the Best Baked Pasta

• Use an oven-safe skillet: if you have one. Searing the beef, building the sauce, layering, and baking all in the same pan saves a dish and keeps the cook time tighter.
• Grate your own Parmesan. Pre-shredded cheese often has anti-caking agents that keep the Alfredo from turning silky smooth.
• Add a pinch of red pepper flakes: to the meat sauce if you want a little heat. It doesn’t make the dish spicy, just wakes up the tomato flavor.
• Let the meat sauce cool slightly: before layering if it’s at a rolling simmer. Pouring a very hot sauce on top of the pasta can start cooking the cheese prematurely.

Bake times by dish:

Storing Leftovers

• Refrigerate: cover tightly and store for up to 4 days. The pasta will absorb even more flavor as it sits.
• Reheating: warm individual portions in the microwave or cover the whole dish with foil and reheat at 350°F for 15 to 20 minutes.
• Freeze: assemble through Step 4 without baking, wrap well, and freeze for up to 2 months. Thaw overnight in the fridge, then bake as directed, adding 10 to 15 extra minutes.

What to Serve With Baked Alfredo and Spaghetti Sauce Pasta

A simple arugula salad with lemon vinaigrette cuts through the richness of the two sauces. Garlic bread is never wrong for mopping up the last bits. If you want a green vegetable, roasted broccoli with olive oil and salt adds a nice crisp contrast.

Frequently Asked Questions

Can I use jarred Alfredo sauce?

Yes. Warm 2 cups of your favorite prepared Alfredo and use it in place of the homemade version. The flavor will be a bit milder, but it still bakes up creamy.

How do I make this ahead of time?

Assemble the entire casserole through Step 4, cover, and refrigerate for up to 24 hours. When you’re ready to bake, add 10 extra minutes since it’s starting cold.

Can I double the recipe for a crowd?

Absolutely. Use a deep 10×15 baking dish or two 9×13 pans and double every ingredient. The bake time may need an extra 5 to 10 minutes if the dish is very full.

My casserole came out watery. What went wrong?

It’s likely that either the meat sauce wasn’t reduced enough or the pasta was overcooked before baking. Simmer the meat sauce until it’s thick and barely sauce-like, and always undercook the pasta by a minute.

Baked Alfredo and Spaghetti Sauce Pasta Recipe

Print Recipe Pin Recipe

Prep Time 20 minutes mins

Cook Time 30 minutes mins

Total Time 50 minutes mins

Servings: 8 servings

Calories: 531

Ingredients Method Notes

Ingredients

  

• 1 lb ground beef
• 1 small yellow onion, diced
• 3 cloves garlic, minced, divided
• 1 (24 oz) jar marinara sauce
• 1 tsp Italian seasoning
• Salt and black pepper
• 8 oz penne or rigatoni pasta
• 4 tbsp unsalted butter
• 1 cup heavy cream
• 1 cup freshly grated Parmesan cheese, divided
• 1 ½ cups shredded mozzarella cheese

Method

 

1. Preheat oven to 375°F. In a large oven-safe skillet or Dutch oven, brown the beef over medium-high heat until no longer pink, about 5 minutes. Add onion and half the garlic and cook 3 to 4 minutes. Stir in marinara sauce and Italian seasoning, season with salt and pepper, and simmer until slightly thickened.
2. In a separate saucepan, melt butter over medium heat. Add remaining garlic and cook until fragrant, 30 seconds. Whisk in heavy cream and bring to a gentle simmer. Cook 2 minutes, then remove from heat and stir in ¾ cup Parmesan until smooth.
3. Cook pasta in salted boiling water until just al dente, about 1 minute less than package directions. Drain and return to the pot.
4. Pour Alfredo over the pasta and toss to coat. Spread half into a greased 9×13 dish. Spoon meat sauce on top, then cover with remaining pasta. Top with mozzarella and reserved ¼ cup Parmesan.
5. Bake uncovered 25 to 30 minutes until bubbly and golden on the edges. Rest 5 minutes, then serve hot.

Notes

If your skillet isn’t oven-safe, transfer the meat sauce to a bowl while you grease the baking dish, then layer as directed. Let the casserole rest a full 5 minutes after baking so the layers set and don’t slide apart when you scoop.