Adjust an oven rack to the middle position and heat oven to 425°. Place the flour, baking powder, and salt in a large bowl and whisk to combine. Add 2 tablespoons of the melted butter and the cream and stir with a wooden spoon until a soft dough comes together.
Turn the dough out onto a floured surface and knead gently until it forms a cohesive ball. With a rolling pin, roll it into an approx. 8-inch square, 3/4 inch thick. Use a 3-inch round biscuit cutter to cut out biscuits and place on a parchment-lined baking sheet, spacing them 1 inch apart. Gather up the scraps, reroll, and cut out more biscuits (you should end up with 8).
Brush the top of the biscuits with the remaining 2 tablespoons melted butter. Bake until the biscuits are golden brown and well risen, about 15 minutes, rotating the pan halfway though. Allow to cool for 5 minutes, and serve.