HEAT oven to 375°F. Spray 8-inch square baking dish with cooking spray.
POUR half the Simmer Sauce into baking dish.
MIX Baking Sauce, spinach and bread crumbs until blended. Spread evenly onto chicken breasts. Starting at one short end; roll up. Cover with remaining Simmer Sauce and cheese.
BAKE 30 to 35 min. or until chicken is done (165ºF).