PreHeat oven to 405 degrees.
I use a cast iron to bake biscuits, so I let the cast iron preheat with the oven adding 1 tsp of butter to the pan to melt while heating.
If not using cast iron, line a baking sheet with parchment paper.
In a large bowl, add mashed sweet potatoes. Pour melted butter into chilled buttermilk and stir with fork to combine. Pour mixture into sweet potatoes. Whisk to combine.
Add flour, baking powder, baking soda, sugar, salt & cinnamon (if using). Stir until just combined.
Turn out dough onto a lightly floured surface. If dough is still slightly sticky, sprinkle flour on top of the dough. Knead the dough 8-10 times, sprinkling with flour as needed.
Press dough out to about 1-1 ½ inch thick and cut with biscuit cutter.
Place on parchment lined baking sheet and bake for 17 to 20 minutes or until golden brown and cooked through. Serve immediately.
These are incredible with apple butter, cinnamon butter or whipped maple butter 🤤