- Preheat oven to hot (400o). Grease 3-quart casserole.
- Sauté mushrooms, green and red peppers, celery, onion, salt and pep-per in large skillet over medium-high heat for about 3 minutes. Stir in the 1/3 cup Bisquick ; cook 1 minute, stirring constantly. Stir in the 1/2 cup milk, the water and bouillon cubes. Heat just to boiling, stirring constantly. Remove from heat ; reserve.
- Prepare Cheese-Biscuit Topping ; Mix together the Bisquick, milk, cheese and parsley in large bowl to form dough, beating about 30 strokes.
- Pour half of the mushroom sauce into casserole. Spread chicken over sauce. Cover with remaining sauce. Drop dough by spoonfuls over top. Spread carefully to cover top of casserole.
- Bake in preheated hot oven until center is hot, about 30 minutes.
- MAKES 6 SERVINGS.