Angel Biscuits

Dissolve the yeast in 1/2 cup warm water in a small bowl, let stand for 5 minutes.

Combine flour, sugar, baking powder, baking soda, and salt in a large bowl.

Cut in shortening with a pastry blender or two knives until mixture resembles coarse meal.

Add yeast mixture and buttermilk to flour mixture; stir until just moist.

Cover and chill 1 hour.

Preheat oven to 450 degrees.

Turn the dough out onto a heavily floured surface; knead lightly 5 times.

Roll dough to a 1/2-inch thickness; cut with a 2 1/2-inch biscuit cutter.

Place biscuits on a baking sheet coated with cooking spray.

Brush melted butter over the biscuit tops.

Bake at 450 degrees for 12 minutes or until golden.