Step 1

Preheat oven to 325 degrees. Spray a 9 x 13 inch baking dish with non-stick cooking spray.

Step 2

Brown ground beef until no longer pink, drain grease. Then add taco seasoning and water and let simmer for 3-4 minutes.

Step 3

In a medium bowl mix sour cream, mayo, half of the cheese, and half of the onion together and set aside.

Step 4

In another bowl, mix together biscuit mix and water to make a soft dough. Press dough into the bottom and 1/2" up the sides of greased 9 x 13 inch pan.

Step 5

Saute remaining onions and green peppers until barely tender.

Step 6

On top of the biscuit, layer the remaining ingredients in this order: ground beef, diced tomatoes, green peppers and onions, green chilies, sour cream mixture, and remaining cheddar cheese.

Step 7

Bake for 30-35 minutes or until edges are slightly browned.