Stack-A-Roll Stroganoff

Directions

1. 1
   Brown ground beef and drain off fat.
2. 2
   Sprinkle onions over beef (reserve 1/2 cup).
3. 3
   Sprinkle sliced mushrooms over onions.
4. 4
   Combine 1/2 cup sour cream and mushroom soup in saucepan.
5. 5
   Heat until boiling point is reached.
6. 6
   Pour over ground beef mixture.
7. 7
   Cut biscuits in 1/2 (1/2 moon shape) and arrange around casserole. Sprinkle 1/2 cup onions in center.
8. 8
   Beat egg, 1/2 teaspoon salt and 1/2 cup sour cream and pour over biscuits around edge of casserole. Bake at 350° until biscuits are browned, approximately 30 minutes.