Flaky, tender biscuits loaded with sharp cheddar and a tangy buttermilk crumb. Perfect warm from the oven with butter, alongside soup or chili, or tucked into breakfast sandwiches.
Preheat oven to 425°F (220°C). Line a baking sheet with parchment paper.
In a large bowl, whisk together flour, baking powder, baking soda, and salt.
Cut in the cold cubed butter with a pastry cutter or your fingertips until the mixture resembles coarse crumbs with pea-size pieces.
Stir in shredded cheddar and chives if using.
Pour in cold buttermilk and stir just until a shaggy dough forms; do not overmix.
Turn dough onto a lightly floured surface and gently pat into a 3/4-inch thick rectangle. Fold in half and pat out again; repeat the fold 2 more times to create layers.
Pat to 3/4–1-inch thickness. Cut into rounds with a floured biscuit cutter (press straight down without twisting) or slice into squares.
Place biscuits on the prepared sheet, touching slightly for softer sides or spaced 1 inch apart for crisper edges.
Bake 12–15 minutes, until tops are golden and layered sides are set.
Brush warm biscuits with melted butter if desired and serve.