Hamburg Gravy over Mashed Potatoes

2 Pounds of Hamburger (as lean as you like) 1 Medium Onion chopped 1/4 cup butter 1/2 cup flour 1 tsp salt 1/4 tsp pepper 1 quart milk 5 pounds potatoes Brown your hamburger and onion in large skillet till cooked. Drain off any fat and put into bowl to hold. In large skillet melt […]