Heat oven to 375°F. Spray 8-inch square (2-quart) glass baking dish with cooking spray.
In 10-inch nonstick skillet, melt 1 tablespoon of the butter over medium-high heat. Cook bell pepper and onion in butter, stirring occasionally, about 5 minutes or until tender. Stir in Alfredo sauce, milk, beans, corn and sriracha sauce. Increase heat to high; cook until mixture is thoroughly heated and bubbly, stirring constantly. Spoon into baking dish.
Separate dough into 10 biscuits. Cut each biscuit in half crosswise. Arrange around edge of baking dish, overlapping slightly. In small microwavable bowl, microwave remaining 1 tablespoon butter on High 30 to 45 seconds or until melted. Drizzle butter over biscuits, and sprinkle with Parmesan cheese.
Bake 15 to 20 minutes or until biscuits are golden brown. Let stand 10 minutes before serving.