Preheat oven to 450°F. Coat a 11x7 baking dish with cooking spray.
Sift together the flour, baking powder, sugar and salt. Place in a large mixing bowl.
Hand mix with the buttermilk until just combined. Batter will be lumpy and super sticky.
Spread the sticky batter to the corners of the dish and then pour melted butter over top. Butter will float above in some areas and not in others, that is fine.
Place into the oven for 15 minutes.
Remove and cut into 8 large biscuits. You can use a basting brush to getting the butter bubbling up the edges on to the top of the biscuits and in the crevices.
Return to oven for 7-8 minutes or until tops are brown.
Allow them to sit for at least 10 minutes before cutting and serving.
If you've tried this recipe, come back and let us know how it was in the comments or star ratings.
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Notes
Do not use a 9x13 pan, it is too shallow and biscuits will be overcooked.