Step 1

Bring a large pot of lightly salted water to a boil. Add pasta, and cook until Al Dente, about 7-8 minutes; drain.

Step 2

In a large skillet, add onion, ground beef, pepper, garlic powder, onion powder, and minced garlic over medium heat. Cook and then drain grease.

Step 3

Add spaghetti sauce, and simmer 15 minutes.

Step 4

Preheat the oven to 350 degrees. Spray 2 (8 x 8 inch) pans with non-stick cooking spray. Layer as follows in each pan: 1/4 of the pasta, 1/4 of the sauce, 4 slices of Provolone cheese, 1/2 of sour cream,  1/4 of pasta, 1/4 mozzarella cheese and 1/4 of sauce mixture. Top with grated Parmesan cheese and remaining mozzarella cheese.

Step 5

Bake covered for 30 minutes in the preheated oven, or until cheeses are melted.