Sweet Potato Biscuits

1 cup all-purpose flour
3 tsp. baking powder
2 tsp. white sugar
1 tsp. salt
2 tbsp. shortening
¾ cup mashed sweet potatoes
¼ cup milk or half and half

Preheat the oven to 400 degrees F. Stir flour, baking powder, sugar and salt together in a medium bowl. Cut in shortening until mixture resembles cornmeal. Mix in the sweet potatoes, and enough of the milk to make a soft dough. Turn dough out onto a floured surface, and roll or pat to a ½-inch thickness. Cut with a knife or biscuit cutter. Place biscuits 1 inch apart on a greased baking sheet. Bake for 12 to 15 minutes until golden brown.