01 - Preheat the oven to 425°F. Line a baking sheet with parchment paper.
02 - In a large mixing bowl, whisk together the flour, baking powder, baking soda, salt, and granulated sugar.
03 - Cut the cold butter into the flour mixture using a pastry cutter or fingertips until the texture resembles coarse crumbs.
04 - Pour in the buttermilk and stir gently with a spatula until the dough just comes together. Avoid overmixing.
05 - Turn the dough out onto a lightly floured surface. Pat into a 1-inch-thick rectangle. Fold the dough in half and pat down; repeat this process two more times for optimal flakiness.
06 - Cut out 8 rounds using a 2-inch biscuit cutter. Position biscuits on the prepared sheet, touching for soft sides or spaced for crispier edges.
07 - Brush biscuit tops with extra buttermilk. Bake for 13 to 15 minutes, or until golden brown. Cool briefly on a wire rack.
08 - Slice each biscuit in half horizontally. Layer a slice of ham and cheddar cheese on the bottom half. Drizzle with honey and lightly season with black pepper.
09 - Replace the biscuit tops and brush with melted butter.
10 - If desired, return assembled sliders to the oven for 2 to 3 minutes to melt the cheese.
11 - Garnish with chopped chives if using. Serve warm.