Preheat oven to 425F
Cut bacon strips into small pieces
Fry bacon until just cooked, save drippings
Mix cooked bacon with mushrooms and green pepper
Sift together the flour, dry mustard, and baking powder
Combine the bacon, mushroom, and peppers mix with the dry ingredients
Add milk, egg, and bacon drippings
Mix thoroughly
Drop by teaspoonfuls onto prepared baking sheet
Bake approximately 8 minutes
Serve alone or with sauce or dip of choice