Serve with your favorite steamed vegetable to round out the meal.
Prepare meat mixture. Refrigerate 3 to 4 days, or freeze up to 1 month. When ready to use, spoon into baking dish. (Thaw first, if frozen.) Top with muffin batter and continue as directed.
Bump up the flavor by stirring chopped canned chipotle peppers in adobo sauce, or chopped fresh chives, into muffin batter before using as directed.