2 cups all-purpose flour
1 tablespoon sugar
2 teaspoons baking powder
1 teaspoon salt
1/4 teaspoon baking soda
3 tablespoons chilled butter, cut into small pieces
3/4 cup (3 ounces) shredded reduced-fat sharp cheddar cheese
1/4 cup finely chopped green onions
1 cup fat-free buttermilk
1/2 cup fat-free sour cream
Cooking spray

2 cup s all-purpose flour 1 tablespoon sugar 2 teaspoons baking powder 1 teaspoon salt 1/4 teaspoon baking soda 3 tablespoons chilled butter, cut into small pieces 3/4 cup (3 ounces) shredded reduced-fat sharp cheddar cheese 1/4 cup finely chopped green onions 1 cup fat-free buttermilk 1/2 cup fat-free sour cream

Preheat oven to 450°.
Lightly spoon flour into dry measuring cups; level with a knife. Combine flour, sugar, baking powder, salt, and baking soda in a large bowl, stirring with a whisk. Cut in butter with a pastry blender or 2 knives until mixture resembles coarse meal. Add cheese and onions; toss well. Add buttermilk and sour cream; stir just until moist.
Drop dough by 1/4 cupfuls onto a baking sheet coated with cooking spray. Bake at 450° for 15 minutes or until edges are brown. Remove biscuits from pan; cool on wire racks.