Melt butter and add flour, salt, or pepper.
.Over low heat, add milk to form a white sauce, stirring until thick.In a separate saucepan, boil potatoes, carrots, and peas and drain.
Add to white sauce.
Add broth, chicken and onions.
Put into a greased 9-by-13-inch pan and top with the biscuits.
Bake at 375 for 20 to 25 minutes.