Combine meat, vegetable, cheese, and onion. Place this mixture in a gallon freezer ziplock bag.
With a mixer or blender, combine the milk, eggs, Tabasco sauce, flour and baking powder. Pour into the bag with the meat and vegetable mixture. Freeze.
Thaw completely. Shake bag well and pour into a sprayed 10" deep dish pie plate or quiche pan. Sprinkle with paprika if desired.
Bake at 350° for 35-45 minutes, until lightly browned on top and well set in the center. cool about 5 minutes before serving.