# What You Need:
→ Pasta
01 - 1 pound spaghetti
→ Meat Sauce
02 - 1 pound ground beef
03 - 1/2 pound Italian sausage, casings removed
04 - 1 medium yellow onion, diced
05 - 3 cloves garlic, minced
06 - 24 oz jar marinara sauce
07 - 1 teaspoon dried Italian herbs
08 - 1/2 teaspoon salt
09 - 1/4 teaspoon black pepper
→ Alfredo Layer
10 - 15 oz container ricotta cheese
11 - 1 cup Alfredo sauce
12 - 1/2 cup sour cream
13 - 1 large egg
→ Cheeses
14 - 2 cups shredded mozzarella cheese
15 - 1 cup shredded Parmesan cheese
# How to Make It:
01 - Preheat oven to 350°F and grease a 9x13-inch baking dish.
02 - Boil spaghetti until al dente according to package instructions, then drain and set aside.
03 - In a large skillet over medium-high heat, cook ground beef and Italian sausage until browned, breaking it up with a spoon; drain excess fat.
04 - Add diced onion and minced garlic to the meat; cook for 3 to 4 minutes until softened.
05 - Stir in marinara sauce, dried Italian herbs, salt, and black pepper; simmer for 5 minutes and remove from heat.
06 - In a bowl, mix ricotta cheese, Alfredo sauce, sour cream, and egg until smooth.
07 - Spread half of the cooked spaghetti in the baking dish, top with half of the Alfredo mixture, then half of the meat sauce; sprinkle with 1 cup mozzarella and 1/2 cup Parmesan cheese.
08 - Repeat the layering with remaining spaghetti, Alfredo mixture, meat sauce, and finish with remaining mozzarella and Parmesan.
09 - Cover the dish with foil and bake for 30 minutes.
10 - Remove foil and bake an additional 10 minutes until cheese is golden and bubbly.
11 - Let casserole rest for 10 minutes before slicing and serving.