Preheat the oven to 450°.

Grease a baking sheet or use a silicone baking mat.

In a large bowl, combine the flour, baking powder, and baking soda.

Cut in the butter until the mixture resembles coarse crumbles.

Add the buttermilk and then stir with a fork to form a soft, sticky dough.

Stir in the cheese and ham.

Turn out the dough onto a floured surface and knead for about 30 seconds.

Roll or pat the dough to ½-inch thickness and then cut with a biscuit cutter.

Place biscuits 2 inches apart on the prepared baking sheet.

Bake for about 10 minutes or until the biscuits are golden brown and done.