Both raw and cooked meatballs can be heated from frozen in the microwave. To cook them evenly, however, turn the meatballs frequently while reheating. Place frozen meatballs in a microwave-safe dish and cover with plastic wrap, leaving one corner open for steam to escape during cooking.Click to see full answer. Herein, can you cook frozen meatballs? Cooking Frozen Meatballs in Oven If you want to make frozen meatballs in the oven with BBQ sauce, simply preheat the oven to 350 degrees Fahrenheit. Place the meatballs on a baking sheet about a half-inch apart in a single layer to promote even cooking. Bake meatballs for 10 to 12 minutes, or until heated through.Subsequently, question is, how do I reheat frozen meatballs? Add frozen meatballs and enough water to barely cover the bottom of the pan. Cook on medium-high heat for about five minutes. Stir occasionally to prevent sticking. You can also reheat meatballs on the stovetop in a simmering sauce or soup. Similarly one may ask, how long cook frozen meatballs? How To Cook Frozen Meatballs in the Oven Preheat the oven to 350. Set the number of frozen meatballs you want to use on a baking sheet with plenty of space between and in a single layer. Bake at 350 for 20 minutes. Remove and use as desired. How long does it take to warm up frozen meatballs in a crockpot? Instructions: Add the frozen meatballs to the slow cooker. Add the diced white onion and barbecue sauce. Stir. Cover and cook on high for 2.5 hours or on low for 4 hours. Stir occasionally so the meatballs won’t burn on the edges. Serve as an appetizer with toothpicks or as dinner on top of mashed potatoes or rice.