My great grandmother used this simple 4 ingredient trick to stretch a dollar. We make it every Mother’s Day to honor her and the kids always beg for second helpings.
Cover and cook the onions on HIGH for 3 hours, stirring once or twice if you can, until they are very soft, golden, and starting to caramelize around the edges. They should be jammy and sweet, sitting in a shallow pool of flavorful liquid.
Break the dry spaghetti in half so it fits more easily in the slow cooker. Nestle the spaghetti into the onions, spreading and pushing the strands down so they are as submerged as possible in the onion mixture.
