Clean chicken and pat dry. Tenderize meat with mallet. Stuff each breast half with 1 tablespoon prepared stuffing. Roll up and hold together with a toothpick. Sprinkle with garlic salt and pepper. Bake 25-30 minutes.
While chicken bakes prepare sauce. Melt 1/4 cup butter in large saucepan. Stir in 1/4 cup flour and mix well. Add 1 1/2 cups chicken broth. Continue to stir as sauce thickens. Add 1 cup heavy cream, 5 tablespoons chopped green onions and 1 pound crab meat. Heat thoroughly. Serve over chicken breasts.