They are very easy to make especially if you are baking with kids, the best part is you can make it from leftover sweet potato… That is such an energy booster addition! This Sweet Potato Cookie recipe has the usual cookie ingredients (you know, the flour and baking soda and all that jazz), but there are a few ingredients that make them so delicious! You'll love this easy sweet potato cookies recipe. In mashing the sweet potato after boiling it, you can peel it and mash it using a food processor. These cookies are airy and fluffy, the kind that melts in your mouth. Ingredients in Sweet Potato Cookies. Sweet Potatoes: We’ll boil these until soft, then mash and mix into our cookie … For a more nutritious cookie, you can add in chia seeds. How to Make this Sweet Potato Cookies Recipe: Ingredients 2 ½ cups all-purpose flour 1 ½ teaspoons baking powder ½ teaspoon baking soda ¼ teaspoon salt ½ cup butter ¼ cup white sugar 1 ½ teaspoons grated lemon zest ¼ teaspoon … Sift together flour, baking soda, baking powder, salt, and cinnamon. Blend in butter mixture and milk. But in this recipe, I just peeled the sweet potato and mashed using a fork.