In a mixing bowl combine 1/3 cup of the cheese spread and the tuna. Spread tuna mixture onto muffin halves. Place halves on the unheated rack of a broiler pan. Broil 4 inches from the heat about 3 minutes or until sandwiches are heated through.
Top each half with 2 tomato-slice halves and a spoonful of the remaining cheese spread. Broil about 1 minute more or until heated through. Top each sandwich with olives and serve with pickle spears, if desired. Makes 3 servings.