Crockpot muscadine jelly is a type of fruit spread made from muscadine grapes, sugar, and pectin. The ingredients are combined in a slow cooker and cooked on low heat for several hours. The finished product is thick and spreadable, with a deep purple color and a sweet-tart flavor. Crockpot muscadine jelly is delicious on toast or biscuits, or even mixed into yogurt or oatmeal.