Step 1

Preheat the oven to 450°F (230°C).

Step 2

Combine the flour, baking powder, baking soda, sugar, and salt in a medium-sized bowl.

Step 3

Pour in the buttermilk and stir until combined. Be careful not to overwork the batter.

Step 4

Pour the melted butter into a 5x5-inch baking dish.

Step 5

Place the dough on top of the butter and use a rubber spatula or the back of a spoon to evenly spread the dough out to the edges of the baking dish. Place the baking dish on a rimmed baking sheet to catch any possible spills.

Step 6

Cut the unbaked dough into 4 squares.

Step 7

Bake for 15 minutes, or until the tops are golden brown.

Step 8

Let the biscuits rest in the pan for at least 10 minutes so that the butter can be absorbed into the biscuits before cutting.