Buttermilk Biscuit Bubble Pizza

3 (7 ounce) packages refrigerated buttermilk biscuits
1/2 cup green pepper, seeded and finely chopped
1 small onion, chopped
1 cup sliced black olives
1 (10 ounce) can sliced mushrooms, well drained
2 cups favorite pasta sauce
4 cups grated mozzarella cheese (or to taste)
sliced pepperoni (any amount desired)
parmesan cheese

Directions: 1 Set oven to 375 degrees F.
2 Grease a 13 x 9-inch baking dish.
3 In a bowl combine the pasta sauce with the green pepper, onion, olives and mushrooms.
4 Cut EACH biscuit into four even pieces with kitchen shears.
5 Arrange HALF of the biscuit pieces in the greased baking dish (it might not cover all of the dish).
6 Spread HALF of the sauce on top of the biscuits.
7 Top with the full amount of pepperoni.
8 Then sprinkle HALF of the mozza cheese on top of the pepperoni.
9 Repeat the layers (remaining biscuits, then sauce, the remaining mozza cheese on top).
10 Sprinkle with a little grated Parmesan cheese on top of the mozza cheese.
 11 Bake for about 20-25 minutes or until the sides are golden brown.