In the Kitchen - Making Cream Beef on Toast (SOS)

Cream Beef or Deer in My Case
1 lb Ground Meat
1 Medium Onion
1 Stick Butter or Margarine
1 T Garlic Powder
1T Onion Powder
1 t Kosher Salt
1 t Black Pepper
1/3 cup Self Rising Flour
5 cups Milk

Bread for Toast