Easy Slow Cooker Crock Pot Meatball Subs sandwiches recipe made with frozen meatballs! Great comfort food dinner for the entire family. This is a great freezer cooking recipe! You can prep ahead of time and have ready to go. You can also use the meatballs and sauce as an appetizer recipe great for football parties. #meatballs#crockpot#slowcooker#easyrecipe
