Step 1: Cook the Spaghetti

1. Bring a large pot of salted water to a boil.
2. Cook spaghetti according to package instructions until al dente.
3. Drain and toss with a little olive oil to prevent sticking.

Step 2: Prepare the Meat Sauce

1. Heat olive oil in a large skillet over medium heat.
2. Add ground beef (or sausage) and cook until browned, breaking it apart.
3. Drain excess grease if needed.
4. Stir in marinara sauce, garlic powder, Italian seasoning, salt, and pepper.
5. Simmer for 5 minutes, then remove from heat.

Step 3: Assemble the Spaghetti Bake

1. Preheat oven to 375°F (190°C).
2. Spread cooked spaghetti evenly in a baking dish.
3. Pour Alfredo sauce over the pasta and toss to coat.
4. Spread meat sauce on top of Alfredo-coated spaghetti.
5. Sprinkle mozzarella and Parmesan cheese evenly over the top.

Step 4: Bake and Serve

1. Bake for 15-20 minutes until the cheese is melted and bubbly.
2. Remove from oven and let it rest for 5 minutes.
3. Garnish with fresh parsley, if desired.
4. Serve hot and enjoy!