Beat together butter & sugar until creamy. Stir in eggs & vanilla. Finally Mix in flour until smooth.
Pour batter into a well greased 4 quart crock pot. Prop the lid open a little with a toothpick or spoon. You may even want to place a couple paper towels between the lid and the crock to keep the moisture off of the top of the cake.
Bake for 3 ½ - 4 hours on high or until a toothpick inserted in the center comes clean.Gluten Free
Use a gluten free flour mix instead of regular flourDairy Free