Brown sausage. Drain, reserving 2 tbs fat. Sauté onion and pepper in 2 tbs fat reserved from the sausage. Combine cheese and flour, toss. Stir in sausage, pepper, and onion (I freeze my sausage cooked so my sausage was cool when I stirred them together). Spread evenly in pie crust. Thoroughly combine remaining ingredients and pour into pie shell over sausage mixture.
Place on a cookie sheet and bake in a preheated oven at 375°F for 40 minutes, until brown and set.