INGREDIENTS
1/2 lb
spicy Italian sausage, casing removed
1
small yellow onion, thinly sliced
1
green bell pepper, thinly sliced
1 cup
sliced mushrooms
12
slider sized potato rolls
1 1/2 cups
marinara sauce
36
pepperoni slices
1 1/2 cups
shredded mozzarella cheese
1/4 cup
olive oil
1 tsp
garlic powder
1 tsp
oregano
4 tbsp
grated Parmesan cheese, divided
2 tbsp
minced parsley