Heat oven to 400. Cook sausage, bell pepper, and onion over medium high heat, stirring occasionally, drain. Combine sausage mixture, potatoes, and 1 1/2 cups cheese in greased 9 x 13 pan.
Stir bisquick, milk, pepper and eggs together. Pour into baking dish.
Bake uncovered 40-44 minutes. Sprinkle with remaining cheese. Bake 1-2 minutes until melted. Serve