Combine first 4 ingredients in a large bowl.

Cut butter into flour mixture with a fork or pastry blender until crumbly; add buttermilk, stirring just until dry ingredients are moistened.

Turn dough out onto a lightly floured surface; knead 2 or 3 times.

Pat or roll to 1/2-inch thickness; cut with a 1 1/2-inch round cutter, and place on a baking sheet.

Bake at 400° for 15 minutes or until biscuits are golden.