A quick one-bowl affair, these biscuits bake up a beautiful dark orange color and have a slightly herbed, buttery flavor. You don’t have to mash away all of the chunks in your sweet potatoes; drop biscuits are meant to be less refined and a few bits of sweet potato are just fine. Avoid the temptation to boil your potatoes instead of baking them as the instructions indicate — boiling them will draw in extra moisture that will change the texture of these biscuits.
For the honey butter: whisk together the butter and honey until creamy.
Prepare the potatoes: Preheat the oven to 400 F. Prick the sweet potatoes with a fork a few times, and place right on oven rack for about 1 hour, or until tender. Remove from oven and allow to cool completely. Once cool, peel away the skin of the potato and mash well with a fork or potato masher.
For the biscuits: Increase the oven temperature to 425 F. Butter a large baking sheet or line with parchment paper.
In a medium bowl, stir together the flours, baking powder, salt and herbs.Using a pastry blender or the tips of your fingertips, work the butter into the flour mixture until it’s the consistency of coarse meal. Add the milk and mashed sweet potatoes and stir them into the dry ingredients until they’re incorporated and a dough has formed.
Drop the dough in 2-3 tablespoon dollops onto the baking sheet. If you have a big ice cream scoop, it’s quite useful here. Bake for 16-20 minutes, or until biscuits have risen and their tops are firm to the touch and golden. Serve warm or let cool on wire rack. These biscuits are best the day they’re made although covered and stored at room temperature, they’re fine the next day, too (I warm them in this case before serving).