2 cups all purpose or unbleached flour
2 cups mashed potato flakes
3/4 cup butter
3/4 cup milk

Filling:

1 tbsp. prepared mustard, if desired
11 oz. can condensed cheddar cheese soup
1/4 cup chopped onion or 1 tbsp. instant minced onion
1/2 tsp salt
1/4 tsp pepper

Topping:

2 tbsp. milk
2 tbsp. butter, melted
1/2 cup mashed potato flakes

Heat oven to 425°F. Lightly spoon flour into measuring cup; level off. In large bowl, combine flour and 2 cups potato flakes. With fork, cut 3/4 cup butter into flour mixture; stir in 3/4 cup milk. Press half of dough into 10-inch circle on ungreased cookie sheet. Brown ground beef; drain. Stir in remaining filling ingredients. Spoon mixture onto dough and spread to within 1/4 inch of dough edge. On waxed paper, press or roll out remaining dough into 11-inch circle. Place over filling and seal edge; brush with 2 Tbsp. milk. In small bowl, combine 2 Tbsp. butter and 1/2 cup potato flakes; sprinkle over top of dough.

Bake at 425 for 20 to 25 minutes or until golden brown. 4 to 6 servings.