Saucy Beef Taco Pizza

INGREDIENTS:

2 lb Ground Beef Chuck 1 1/2 ea Slices White Bread **
8 oz (1 cn) Tomato Sauce 1 ea Large Egg, Slightly Beaten
1/2 c Taco Seasoning Mix * PLUS 2 c Shredded Cheddar Cheese
2 tb Taco Seasoning Mix * 1/2 c Sour Cream
1/3 c Chopped Green Pepper 1 x Cheddar Cheese Slices
1/3 c Finely Chopped Onion