1 lb. lean ground beef
1 egg
1/4 c. dry bread crumbs
Dash of pepper
3 tbsp. milk
1 tbsp. chopped parsley, for potatoes
4 oz. can mushrooms, drained
1/3 c. chopped onions
1 tsp. salt
2 c. cubed, cooked potatoes
1/2 lb. Velveeta cheese, cubed

Combine meat, mushrooms, egg, onion, bread crumbs, and seasoning and mix lightly. Press meat mixture onto bottom and sides of pie plate; bake at 400 degrees for 15 minutes. Mash potatoes with milk; stir in cheese, parsley, and 1/4 teaspoon salt. Remove meat mixture from oven; reduce temperature to 350 degrees. Drain, fill with potato mixture. Continue baking for 10 minutes.