Preheat oven 350

Brown hamburger with onion & green pepper

Add taco seasoning & water. Cook 4 - 5 minutes or until water is absorbed.

Combine sour cream. mayo & 4 oz. of cheddar cheese in a bowl.

Combine bisquick & milk in another bowl to form soft dough.

Pat dough on bottom and up 1/2 " up sides of 9 x 13 greased baking dish.

Add meat mixture to top of dough.

Top with tomato slices, then peppers.

Top that with sour cream mixture and end with rest of cheddar cheese.

Bake 40 min. or until edges of dough are lightly browned and cheese is melted.