01 -
Preheat the oven to 350°F. Spray a 9x13-inch casserole dish with non-stick cooking spray and set it aside.
02 -
In a large skillet, break up the ground beef and cook over medium-high heat until no longer pink. Drain the excess grease. Add the diced onions, bell peppers, taco seasoning, and 1/2 cup of water. Stir and simmer for 10 minutes until the onions and peppers have softened. Turn off the heat and set aside.
03 -
In a medium mixing bowl, combine bisquick with 3/4 cup of water to form a loose dough. Spoon the dough into the bottom of the prepared casserole dish and smooth it out. Bake in the preheated oven for 5 minutes. Remove from oven but leave the oven on at 350°F.
04 -
Place the cooked ground beef mixture on top of the par-cooked biscuit dough in the casserole dish and smooth it out evenly. Top with the diced tomatoes and corn, spreading them out evenly.
05 -
In a separate medium mixing bowl, combine the sour cream, mayonnaise, half of the shredded cheddar cheese, black pepper, and green chilies. Spread this mixture on top of the ground beef layer in the casserole dish. Sprinkle the remaining cheese on top.
06 -
Bake in the preheated oven for 30 minutes. Let the casserole sit for 7-10 minutes to set before serving. Garnish with fresh chopped parsley if desired.