Impossible Cheeseburger Pie

Directions

1. 1
   Grease a 10-inch pie plate.
2. 2
   Brown beef and onion; salt and pepper.
3. 3
   Spread in pie pan.
4. 4
   Beat milk, Bisquick and eggs together in blender for about 15 seconds.
5. 5
   Pour over the meat in pie dish. Bake 25 minutes at 400°.
6. 6
   Remove from oven; cover with American cheese and tomato slices.
7. 7
   Return to oven for 6 to 8 minutes longer.
8. 8
   Remove from oven and add the Longhorn cheese.
9. 9
   Bake until cheese is melted.