Combine flour, cornmeal, sugar, baking powder and salt in a bowl. Mix in butter with a pastry blender, a fork or your fingers until mixture resembles coarse crumbs.
Add buttermilk and stir until mixture is just combined. Fold in the cheddar cheese.
Fold in the cheddar cheese.
Using a Tbsp, drop by spoonful onto a greased baking sheet. Allow about an inch between biscuits.