Heat oven to 375°F. Bake biscuits as directed on bag.
Meanwhile, in microwavable bowl, microwave vegetables as directed on package. Add tuna and Alfredo sauce; mix well. Microwave on High 2 to 3 minutes or until hot, stirring once.
Split hot biscuits; place bottom halves on individual serving plates. Top each with one-fourth of the tuna mixture. Top each with biscuit top and remaining tuna mixture. Sprinkle each with cheese.