Preheat oven to 450 degrees.

Slice the butter into a couple of thin slices and spread in the bottom of an 8×8" baking dish.

Place the butter in the baking dish into the oven while it preheats to allow the butter to melt.

In a mixing bowl, mix together flour, baking powder, sugar, and salt.

Carefully pour in the buttermilk, mixing until the flour mixture is just moistened (be careful not to overmix!).

Remove melted butter pan from the oven.

Place the dough in the melted butter pan and spread it evenly in the pan with your fingers. As you spread the dough out to the corners, the butter will start to surround the dough and flow on top of the dough (which is what you want!).

Cut the dough into 9 equal squares (you don't have to do this step, but it makes it easier to pull apart later and allows the butter to soak into all the edges of each piece).

Bake for 20-25 minutes (start checking at 20 minutes) or until the biscuits are golden brown.

Serve hot with honey butter or your favorite toppings.