These slow cooker meatballs don't need any pre-cooking - just mix, roll, and drop them in the slow cooker with the sauce. These soft and juicy meatballs are freezer-friendly and great for sub sandwiches or served with pasta.
In a 6-quart slow cooker, combine the olive oil, crushed tomatoes, tomato sauce, onion, garlic, salt and red pepper flakes.
Combine the eggs, breadcrumbs, salt, onion powder, garlic powder, pepper, and oregano in a large bowl. Add the ground beef and sausage and, using your hands, mix it all just until combined. Scoop approximately one ounce of the mixture to form each ball.
Place the meatballs in an even layer in the sauce. Spoon sauce over the meatballs so they are covered, place the lid on the slow cooker, and set it to high for four hours. Serve on rolls or with pasta.
Notes
Storage: Leftover meatballs and sauce will keep in an airtight container in the refrigerator for three to four days. Or, store them in a freezer container, and they will freeze well for several months.