Slow Cooker Amish Porcupine Meatballs Recipe Ingredients 2 pounds ground beef (80–90% lean) 1 cup uncooked long-grain white rice 1 medium onion, finely chopped 2 teaspoons kosher salt 1 teaspoon black pepper 2 cans (15 ounces each) tomato sauce 1 cup water Directions Lightly coat the inside of a 5- to 6-quart slow cooker with nonstick cooking spray or a thin film of oil to help prevent sticking. In the slow cooker crock set on the countertop, add the ground beef, uncooked long-grain white rice,