1 lb bulk Italian sausage
1 small yellow onion, finely diced
1 red bell pepper, finely diced
1 green bell pepper, finely diced
2 cloves garlic, minced
1/2 tsp salt
1 26-oz jar tomato sauce
1 13.8-ounce package Pillsbury classic pizza dough
1 cup shredded low-moisture mozzarella cheese
Preheat the oven to 450 degrees F.
In a large saute pan, cook the sausage over medium high heat until the sausage is well browned, about 10 minutes. Remove the sausage to a bowl and set aside. Discard all but 1 teaspoon of the grease.
In the remaining sausage grease, cook the onion with the red and green bell peppers over medium-high heat. Cook until the onion is translucent and the vegetables are softened, about 8 minutes.
Add the garlic and salt and cook until fragrant, about 1 minutes.
Add the cooked sausage, oregano, and pasta sauce. Bring to a simmer and cook for 5 minutes to allow the flavors to come together. Remove from the heat and allow to cool slightly.
Meanwhile, unroll the pizza dough onto a lightly floured work surface. Cut the dough using a 9-inch pie dish as a guide. Remove the excess dough around the baking dish and set the round piece of dough aside.
Lightly grease the pie dish and pour the beef mixture inside. Sprinkle it with the cheese and cover it with the round piece of dough.
Cut an "x" in the top of the dough to allow steam to escape.
Bake the pie for 16-20 minutes, until the crust is golden brown.
Allow the pie to sit for 10 minutes before slicing and serving.