1Heat oven to 400°F. In 10-inch cast-iron or other ovenproof skillet, melt 2 tablespoons butter over medium heat. Add onion, bell pepper and garlic; cook 6 to 8 minutes or until tender. Add corn and edamame; cook 2 minutes. Stir in broth; cook 1 minute. Stir in chicken, 1/4 teaspoon of the pepper and the soup. Keep chicken mixture warm.
2In medium bowl, place Bisquick mix; cut in 1/4 cup butter with pastry blender until mixture looks like coarse meal. Stir in cheese, sour cream, basil and remaining 1/4 teaspoon pepper until stiff dough forms. Drop by slightly heaping 1/3 cupfuls into 8 mounds on chicken mixture.
3Bake 30 to 35 minutes or until topping is golden brown.