Green Onion Drop Biscuits

2 cups flour
2 teaspoons baking powder
1/2 teaspoon salt
1/4 tablespoon baking soda
3 tablespoons shortening
1/4 cup finely chopped green onions
1 cup lowfat buttermilk

Preheat oven to 400�F. Combine first 4 ingredients in a large bowl; cut in shortening with a pastry blender or 2 knives until mixture resembles coarse meal. Stir in green onions. Add buttermilk, stirring just until flour mixture is moist. Drop batter by heaping tablespoons onto a baking sheet coated with cooking spray. Bake for 15 minutes or until lightly browned.