Ever wondered how to make grape jelly meatballs? Everyone loves this super easy appetizer! All you need is just 3 ingredients. Frozen meatballs, concord grape jelly and chili sauce. So simple! And the glaze is so delicious! Everything slow cooks in the crockpot. Serve with toothpicks or a slotted spoon. Perfect for football or holiday parties. If you don't have a crockpot, you can make these yummy sweet and spicy meatballs on the stovetop as well.