Preheat oven to 325F (163C).
Blend all cake ingredients until smooth using an high speed blender or food processor.
1 cup vanilla whey concentrate, 2 tablespoons coconut flour, 1 cup cooked sweet potato, 2 tablespoons water, 1 teaspoon baking powder, ⅛ teaspoon sea salt, ⅛ teaspoon ground cinnamon
Pour batter into 6 small silicone muffin cups placed on a baking sheet, or into muffin tin cavities lined with paper liners and sprayed with non-stick cooking spray.
Bake for 8-10 minutes, just until firm and a toothpick comes out clean. Do not over-bake!
Meanwhile rinse and drain cashews.
1 cup raw cashews
Blend cashews with remaining frosting ingredients until smooth.
⅓ cup water, ¼ teaspoon toffee flavored stevia, ⅛ teaspoon ground cinnamon
Place frosting in the freezer to cool a bit while your cupcakes finish baking.
Remove cupcakes from oven, and let cool.
Frost, and enjoy!
Store in the refrigerator.