Directions

1. Wrap the sweet potato with a damp paper towel and microwave on high until very soft, 3 to 4 minutes. Transfer to a bowl, mash with a potato masher, and set aside to cool. Meanwhile, in a medium skillet over medium heat, cook the bacon until golden and crisp, about 8 minutes. Use a slotted spoon to transfer bacon to a paper towel-lined plate, then set aside to cool. Carefully set aside 2 tablespoons of bacon drippings from the skillet.
2. Preheat oven to 375 degrees F. Line a large baking sheet with parchment paper.
3. In a food processor, combine the flour, baking powder, sugar, baking soda, salt, and allspice and pulse a few times. Add the cubed butter and pulse to make a coarse meal with a few pea-sized pieces. Transfer mixture to a large bowl and gently mix in the bacon, buttermilk, and 1 cup of the mashed sweet potato (save any remaining potato for another use).