Impossible Cheeseburger Pie

Directions

1. 1
   Heat oven to 400°.
2. 2
   Grease pie plate.
3. 3
   Brown beef and onion; drain off fat.
4. 4
   Spread on pie plate.
5. 5
   Beat milk, Bisquick, salt, pepper and eggs until smooth.
6. 6
   Pour in pie plate and bake for 25 minutes.
7. 7
   Top with tomatoes and cheese.
8. 8
   Bake until knife inserted in center comes out clean, approximately 5 to 8 minutes.