01 -
Preheat oven to 375°F.
02 -
Cook jumbo shells according to package instructions until al dente. Drain and set aside.
03 -
In a large skillet, heat olive oil over medium heat. Add chopped onion and green pepper, and cook until soft, about 4-5 minutes.
04 -
Add ground beef, garlic powder, salt, and pepper to the skillet. Cook until beef is browned and fully cooked, breaking it into crumbles. Drain excess fat and remove from heat.
05 -
Stir 1/2 cup provolone cheese and 1/2 cup cheddar cheese into the beef mixture. Let it cool slightly.
06 -
Fill each cooked pasta shell with the beef and cheese mixture.
07 -
Spread half of the cheese sauce on the bottom of a 9x13 inch baking dish. Arrange the stuffed shells on top.
08 -
Drizzle the remaining cheese sauce over the shells and top with the remaining shredded cheeses.
09 -
Cover with foil and bake for 20 minutes. Remove foil and bake another 10 minutes, until bubbly and golden.
10 -
Let rest for a few minutes before serving.