1 lb lean ground beef
1/2 medium yellow onion
3 cloves garlic
16 oz. penne pasta
2 (26 oz) marinara sauce jars
6 slices provolone cheese
6 oz. shredded mozzarella cheese
16 oz. sour cream

1 lb lean ground beef 1/2 medium yellow onion 3 cloves garlic 16 oz. penne pasta 2 (26 oz) marinara sauce jars 6 slices provolone cheese 6 oz. shredded mozzarella cheese 16 oz. sour cream

Bring a large pot of lightly salted water to a boil.
Add penne pasta and cook until done (about 12 minutes) then drain.
In a large skillit, brown diced onion, 3 cloves of minced garlic and ground beef over MEDIUM heat. Add spaghetti sauce and warm through.
Preheat oven to 350 F. Lightly oil or spray a 9×13 baking dish.
Layer as follows; 1/2 pasta, 16 oz sour cream, 6 slices of provolone cheese, 1/2 sauce mixture, remaining pasta, remaining sauce mixture, 6 oz shredded mozzarella cheese.
Bake 35 minutes at 350 F or until cheese melts