Preheat oven to 450' F. Grease muffin pan (for 12 muffins). In mixing bowl combine flour, baking powder, baking soda, salt, and sugar together.
Add the butter and with hands work the butter into the flour until the butter has broken up into tiny balls. Stir in the sweet potatoes, and pecans. Add the cream a bit at a time until the dough is soft and formed.
Lightly flour a surface and place dough the surface, and lightly press it into a giant ball. Take dough and make about a two inch ball and place in one of the muffin cups. Bake for about 15 min or until muffins are golden brown. Serve warm!! Enjoy.