Created by Under15Cook on February 16, 2017
Step 1: Preheat oven to 375 degrees F. Heat butter in a large skillet, cook the ground beef breaking up the meat while cooking. Cook until the meat is cooked through. Drain fat. Add in onion; cook for a few minutes or till soft. Add garlic powder, taco seasoning, salt, pepper and flour, cook and stir 1 minute.
Step 2: Add chicken stock tomato sauce. Bring the mixture to a boil. Reduce the heat to low and let simmer for 5 to 10 minutes.
Step 3: Stir in cooked rice, 1/2 cup cheddar cheese, 1/2 cup Monterey Jack, and sour cream. FOR TOPPING: Combine the jack cheese with cheddar cheese (1/2 cup each) then sprinkle over the top of the casserole.
Step 4: Bake until top is golden brown, 15-20 minutes.
Step 5: Garnish with green onions over top. Serve.