Cheeseburger Pie

Directions

1. 1
   In a skillet, cook ground beef and onion until meat is brown and onion is tender.
2. 2
   Drain off fat.
3. 3
   Stir in tomato sauce, drained mushrooms, salt and pepper.
4. 4
   Unroll one package of crescent rolls and separate into triangles.
5. 5
   Place in a lightly greased pie plate, pressing edges together to form pie shell. Separate one of the eggs; set yolk aside.
6. 6
   Beat egg white with the remaining 2 eggs.
7. 7
   Pour 1/2 the beaten egg over pie shell.
8. 8
   Spoon meat mixture into shell.
9. 9
   Arrange the cheese slices atop; spread rest of beaten egg on cheese.
10. 10
    Mix reserved egg yolk with water; lightly brush some over edge of pastry.
11. 11
    Reserve rest.