Heat oven to 400oF.
Thaw veggies under cold water.
Cut up chicken into small pieces and saute in a pan with mushrooms with desired seasoning.
Mix vegetables, chicken and soup in ungreased glass pie plate or large baking dish.
Stir together milk, eggs and bisquick until blended and add a few pinches of salt.
Slowly pour the batter over the veggies and chicken
Bake 30 minutes or until golden brown.