1  pound ground beef
    1  can (4 oz) mushrooms drained
    2  eggs
1/3  cup chopped onion
1/4  cup dry bread crumbs
1/2  teaspoon salt
Dash Pepper
    2  cups chopped cooked potatoes
    3  tablespoons milk
1/2  pound velveta, cubed
    1  tablespoon chopped parsley
1/4  teaspoon salt

Combine meat, mushrooms, eggs, onion, bread crumbs and seasonings; mix lightly; Press meat mixture onto bottom and sides of a 9-inch pie plate; bake at 400F for 15 minutes.
Mash hot potatoes with milk, stir in velveta, parsley and salt, remove meat shell from oven; reduce oven temperature to 350F, Drain meat shell, fill with potato mixture, return to oven, continue baking 10 minutes.