Step #1 Heat oven to 425°F Grease a 9 x 9" baking dish.
Step #2 Place in oven to heat.
Step #3 In small bowl, mix egg, 1 C cheese & creamed corn, cornbread mix, milk, mix well.
Step #4 Pour batter into baking dish & bake 20 - 25 mins until golden brown.
Step #5 Saute the ground beef with the taco seasoning mix & 1/2 C onion until beef is browned & onion is tender, drain.
Step #6 Remove cornbread from oven.
Step #7 Slice into 9 squares.
Step #8 Place lettuce, onions, tomato, black olives, salsa, cheese, sour cream & avocados in individual small bowls & let every one top the cornbread with their desired toppings.