Preheat the oven to 425°F (220°C).

In a mixing bowl, whisk together the flour, baking powder, and salt.

Add the cold, cubed butter to the flour mixture and mix until it resembles coarse crumbs.

In another bowl, beat the eggs and mix in the milk, then pour this mixture into the dry ingredients and gently stir until just combined.

Fold in the cheese if using.

Flour your work surface and roll out the dough to about 1-inch thickness.

Use a knife or pizza cutter to cut the dough into squares or rounds.

Place the cut biscuits onto a parchment-lined baking sheet.

Bake for 15-20 minutes or until golden brown.