These light, fluffy biscuits are great on their own, or spread with a special flavored butter.
Adjust oven rack to middle position and heat oven to 450 degrees. Line rimmed baking sheet with parchment paper.
In large bowl, whisk flour, baking powder, baking soda, sugar, and salt until combined. In liquid measuring cup, use fork to stir buttermilk and melted butter until butter forms small clumps.
Add buttermilk mixture to bowl with flour mixture. Use rubber spatula to stir until just combined.
Spray inside of ¼-cup dry measuring cup with vegetable oil spray. Use greased measuring cup to scoop batter and use butter knife to scrape off extra batter. Drop scoops onto baking sheet to make 10 to 12 biscuits (leave space between biscuits and respray measuring cup as needed).