Crockpot Sweet Potatoes with Marshmallows Recipes are warm, soft, and naturally sweet. When you cook them in a crockpot, they become extra tender and full of flavor. This Crockpot Sweet Potatoes with Marshmallows Recipe is very simple and cozy. It is great for holidays or even normal dinners. The marshmallows melt on top and make a sweet, golden layer that ...