Preheat oven to 350℉.
Lightly grease 9x13 baking dish.
Cook pasta per directions.
Cook onion and meat until done.
Add marinara sauce to the onion and meat mixture.
Layer in the baking dish in the following order:1. ½ Pasta2. Provolone3. Sour Cream4. ½ Sauce Mixture5. Remaining Pasta6. Mozzarella7. Remaining Sauce Mixture8. Parmesan Cheese Cover with foil and bake for 30 minutes