Sweet Potato Biscuits

I got this recipe from a Paula Deen cooking class I took at ISU.

3/4 c. mashed cooked sweet potatoes
1/4 c. milk
1/4 c. butter
1 3/4 c. all-purpose flour
4 TBS baking powder
2 heaping tsp sugar
1/2 tsp salt

Preheat oven to 450 degrees. In a large bowl, mix the potatoes, milk, and butter. In another bowl, sift together the flour, baking powder, sugar, and salt. Add the flour mixture to the potato mixture and combine to make a soft dough. Turn the dough out onto a floured board and toss lightly until the outside of the dough looks smooth. Roll the dough out to one-half inch thick and cut with a round cutter. Place the biscuits on a greased pan and bake for about 15 minutes. (Watch your oven: If the biscuits are browning too fast, lower the temperature.)