Combine all dry ingredients in a large mixing bowl and set aside.
In a separate large bowl, mix together milk, cream and mashed Bruce’s Yams Cut Sweet Potatoes until evenly combined.
Grate frozen butter through the large holes of a box grater and toss with dry ingredients until butter is coated. Add milk/cream mixture and mix lightly until dough forms.
Turn dough out onto a floured surface and knead just until it comes together, about 30 seconds (the dough will not be smooth). Pat into a circle and use a floured rolling pin to roll dough to a thickness of about 3/4 inch. Using a 3-inch biscuit cutter, cookie cutter, or glass, cut the dough into rounds.
Place rounds on a parchment lined cookie sheet and bake for 18-20 minutes or until golden brown. Serve with cranberry butter, if desired.
To make cranberry butter, stir all ingredients together until mixed well.