1Heat oven to 400. Spray a 9 x 13" baking pan w/ cooking spray. In lg skillet, sprayed w/ cooking spray, cook sausage, red bell pepper and onion over medium heat, stirring until sausage is fully cooked.
3In bowl, stir together bisquick mix, pepper, milk and eggs. Mix well. Pour over sausage mix. Bake 30 min, or until a knife inserted in center comes out clean. Sprinkle w/ remaining cheese and bake until cheese is melted.