1 lb. hamburger
1 1/2 c. chopped onion
1 pkg. taco seasoning
1 1/4 c. milk
3/4 c. Bisquick mix
3 eggs
1 c. cheddar cheese
Sour cream
Chopped tomatoes
Shredded lettuce
Black or green olives

Grease 10-inch pie plate. Brown hamburger and onion; drain. Stir in taco seasoning; spread in pie plate. Beat milk, Bisquick and eggs until smooth. Pour over hamburger mixture. Bake 25 minutes at 400 degrees.

Sprinkle with cheese. Bake an additional 8-10 minutes until knife inserted comes out clean. Cool 5 minutes. Top with tomatoes, lettuce, olives and sour cream.