2. Chop onion. Place Wahlburgers Ground Beef in a large skillet and cook over medium to high heat. Add onions and stir, let simmer for about 5 minutes. Prepare the instant mashed potatoes while beef and onions are simmering. Spoon meat into a baking dish. Next, layer the cream-corn over the meat. Last, add the mashed potatoes over the creamed corn. Bake at 350 degrees until heated through and the top is lightly browned – about 30 minutes.