Preheat oven to 375 degrees.
Cook 1 lb. ground meat in a saucepan on medium heat until no longer pink. Drain and return to burner.
Stir 14.5 oz. canned tomatoes, 1 packet of taco seasoning, ½ cup cheese, and the ¼ cup of salsa verde into meat.
Arrange taco shells standing up in a 9x13" ungreased pan. Fill each shell with the meat mixture, dividing equally until all the meat is used.
Sprinkle remaining ½ cup of cheese over the tops of the filled tacos and bake for 15-20 minutes.
While tacos are baking, arrange taco toppings in assembly line fashion in small bowls or however is convenient.
After casserole has heated through and cheese is melted, serve immediately with toppings.