01 -
Set the oven to 375°F.
02 -
Heat olive oil in a skillet over medium heat. Add diced onions and bell peppers. Cook until softened, about 3 minutes.
03 -
Add ground beef to the skillet. Cook, stirring occasionally, until beef is browned and cooked through. Drain excess fat.
04 -
Stir in pizza sauce and simmer for 5 minutes. Remove from heat.
05 -
Fit the pre-made pie crust into a pie dish. Spoon the beef and vegetable mixture evenly into the crust. Sprinkle shredded mozzarella cheese on top and arrange pepperoni slices over the cheese.
06 -
Bake for 25 to 30 minutes or until the crust is golden brown and the cheese is melted and bubbling.