Royal Spaghetti Bake

Royal Spaghetti Bake is a baked pasta casserole layered with spaghetti, ground beef, and a creamy cheese sauce, then baked until golden and bubbling at the edges. The pasta cooks partly before assembly so it finishes tender without turning mushy, and the cheese sauce binds everything together into slices that hold their shape.

Ingredients for Royal Spaghetti Bake

Spaghetti forms the base of the casserole and should be cooked until just shy of tender so it continues cooking in the oven without falling apart. Ground beef provides savory depth and body to the layers. Onion and garlic build a flavor foundation in the meat sauce. Tomato sauce and tomato paste add acidity and richness that balance the cream. Beef broth keeps the filling moist without making it watery. Butter and flour make the roux that thickens the cream sauce. Heavy cream and whole milk create a silky binding layer. Cheddar cheese and Parmesan cheese melt into the sauce and brown on top, giving the bake its savory crown. Salt, black pepper, garlic powder, and Italian seasoning season the meat and sauce.

Why This Royal Spaghetti Bake Works

Cooking the spaghetti to just under al dente is the key to texture. The pasta absorbs liquid as the casserole bakes and continues to soften, so starting with fully cooked noodles would leave you with mush. Stopping short of tender gives the final dish the right bite and prevents the casserole from becoming a wet, falling-apart mess.

The meat sauce and cream sauce are layered separately so the flavors stay distinct and the casserole slices cleanly. The cream sauce acts as a binder that holds the layers together, while the meat sauce stays flavorful and concentrated. Baking uncovered in the last 10 minutes lets the cheese on top brown and crisp, creating a contrast to the soft pasta below.

Resting the casserole for 5 minutes after it comes out of the oven allows the layers to set slightly so they hold together when you cut and serve. Without this rest, the hot cheese and sauce are too loose and the pieces fall apart on the plate.

Mistakes To Avoid

Cooking the pasta all the way to tender before assembly is the biggest mistake. The noodles continue cooking in the oven and will turn to mush if you start with fully cooked pasta. The casserole will look soupy and the strands will break apart when you try to serve it.

Skipping the drain step after browning the beef leaves grease pooling on top of the casserole. The top becomes slick and greasy instead of golden and crispy, and the dish tastes oily throughout. Always drain the meat in a colander and pat the pan dry before building the layers.

Covering the casserole for the full baking time traps steam and prevents the cheese from browning or crisping. The top stays pale and soft, and the whole dish can taste steamed rather than baked. Uncover it for the last 10 minutes so the cheese can brown.

Not resting the casserole after it comes out of the oven makes it fall apart when you cut it. The layers are still too loose and hot, so pieces slide and crumble instead of holding together as neat slices.

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Ingredients

• 1 pound spaghetti
• 1 pound ground beef
• 1 medium onion, diced
• 4 cloves garlic, minced
• 1 can (15 ounces) tomato sauce
• 2 tablespoons tomato paste
• 1 cup beef broth
• 3 tablespoons butter
• 3 tablespoons all-purpose flour (24 grams)
• 1 1/2 cups heavy cream
• 1 cup whole milk
• 2 cups shredded cheddar cheese
• 1 cup grated Parmesan cheese
• 1 1/2 teaspoons salt
• 1/2 teaspoon black pepper
• 1 teaspoon garlic powder
• 1 teaspoon Italian seasoning

Step-by-step Instructions

1. Preheat the oven to 375°F (190°C).
2. Bring a large pot of salted water to a boil over high heat, add the spaghetti, and cook for one minute less than the package directions (usually 8 to 9 minutes total), stirring occasionally. The pasta should still be slightly firm to the bite. Drain and set aside.
3. While the pasta cooks, heat a skillet over medium-high heat, add the ground beef, and cook for 5 to 7 minutes, stirring often, until it is no longer pink. Drain the beef in a colander and return it to the skillet.
4. Add the onion and garlic to the beef and cook over medium heat for 2 to 3 minutes, stirring, until softened and fragrant. Add the tomato sauce, tomato paste, and beef broth, stir well, and simmer for 5 minutes. Season with salt and pepper to taste and set aside.
5. In a separate skillet, melt the butter over medium heat, sprinkle the flour over it, and stir constantly for 1 to 2 minutes until it forms a smooth paste (this is the roux). Slowly pour in the heavy cream and milk while stirring to prevent lumps. Cook for 3 to 4 minutes, stirring often, until the sauce thickens enough to coat the back of a spoon. Remove from heat, stir in 1 cup of the cheddar cheese, 1/2 cup of the Parmesan, garlic powder, Italian seasoning, salt, and pepper. Taste and adjust seasoning.
6. Spread one-third of the drained spaghetti in the bottom of a 9 by 13 inch baking pan. Pour half of the meat sauce over the pasta and spread evenly. Add another third of the pasta, then the remaining meat sauce. Top with the final third of the pasta, then pour the cream sauce over everything, spreading to the edges so all the pasta is covered.
7. Cover the pan with aluminum foil and bake at 375°F (190°C) for 35 minutes. Remove the foil and sprinkle the remaining 1 cup of cheddar and 1/2 cup of Parmesan evenly over the top.
8. Bake uncovered for 10 to 12 minutes more, until the cheese is melted and golden brown and the casserole is bubbling at the edges. Check the center temperature with an instant-read thermometer; it should read at least 165°F (74°C).
9. Remove from the oven and let rest for 5 minutes before serving. This allows the layers to set so they hold together when cut.