This is the first bubble up recipe I tried and it was so easy for me and popular with the family that I make it quite often. Feel free to spice things up with all your favorite toppings.
1 (7.5 ounce) tube buttermilk biscuits
1 (14.5) ounce can tomato sauce
1/2 cup onion
1/2 large bell pepper
1/3 cup Pepperoni Minis or cut in fourths (or to taste)
1 1/2 teaspoons Italian seasoning
1 cup Mozzarella cheese, divided
1/2 cup Parmesan cheese
Other toppings of choice, Italian sausage, black olives, mushrooms etc.
Pour tomato sauce in medium bowl. Quarter biscuits and put in sauce. Moisten them with the sauce to keep separate. Add veggies, pepperoni, Italian seasoning, 1/2 Mozzarella cheese and any other toppings. Spoon into a 7 X11 pan. Sprinkle with the rest of the Mozzarella and Parmesan cheeses. Bake at 350 degrees for 30-35 minutes. Can be doubled for 9X13 inch pan. Makes 4-6 servings.