Sour Cream Biscuits

2 cups sifted all-purpose flour
2 tablespoons unsalted butter
2 1/2 teaspoons baking powder
1/4 teaspoon baking soda
2/3 cup milk
1/4 teaspoon salt
Nonstick cooking spray
4 tablespoons sour cream

1. Preheat the oven to 425º. In a large bowl, combine the flour, baking powder, baking soda, and salt. With a pastry blender or fork, work in the sour cream and butter until the mixture resembles coarse meal.

2. Stir in all but I tablespoon of the milk; the dough should be firm but not dry. Turn the dough out onto a lightly floured surface and knead 2 or 3 times or until smooth. Roll the dough out about 1/2 inch thick; using a 2-inch biscuit cutter dipped in flour, cut out 12 round biscuits.

3. Coat a baking sheet with the cooking spray, arrange the biscuits on it, and brush the tops with the remaining tablespoon of milk. Bake for 12 minutes or until the biscuits are golden. Makes 12 biscuits.

Variation: Use cream cheese instead of sour cream.