Combine baking mix and cheese in a bowl; make a well in center of mixture. Add milk, stirring just until dry ingredients are moistened.
Drop dough by rounded tablespoonfuls, 2 inches apart, onto a baking sheet coated with cooking spray. Bake at 450° for 8 to 10 minutes or until biscuits are golden.
Combine margarine, garlic powder, and parsley flakes; brush over warm biscuits. Serve immediately.