In skillet blend soup and 1/2 cup milk.
Add next 5 ingredients.
Heat to boiling, stirring frequently.
Pour into 1-quart casserole.
Combine biscuit mix and 1/3 cup milk as directed on package; drop by spoonfuls onto hot chicken mixture.
Bake in very hot oven (450°) 10 to 15 minutes, or till biscuits are lightly browned.