Mini sweet potato whoopie pies with maple marshmallow frosting

Ingredients

• 1/2 cup + 3 Tbsp sweet potato puree
• 1/4 cup pure maple syrup
• 2 Tbsp Sucanat or brown sugar
• 1/2 tsp pure vanilla extract
• 1/2 tsp pure maple extract
• 1 large egg
• 1/2 cup whole wheat pastry flour
• 1/2 cup unbleached all-purpose flour
• 1/2 tsp baking powder
• 1/4 tsp baking soda
• 1/2 tsp ground cinnamon
• 1/4 tsp ground nutmeg
• 1/4 tsp salt
• 2 oz all-natural marshmallow creme
• 1 Tbsp unsalted butter
• 1 Tbsp pure maple syrup
• 1/4 tsp pure maple extract