Preheat oven to 350º F.
Spray a bundt pan with cooking spray.
Remove the bread dough from the pan and place the rolled dough into the bottom of the pan. Gently pinch the two ends together to form a ring.
Bake the bread at 350º for 30 - 35 minutes (or until golden brown).
Remove to cooling rack and allow to completely cool then cut in half with a bread knife.
Place the bread into the oven set on broil and lightly toast the cut sides of the bread - set aside.
In a medium bowl, mix the drained tuna, mayonnaise, celery, onion, mustard, salt, and pepper in a bowl.
Spread the tuna salad onto lower bread ring.
Top with Gayo Azul Cheese Slices and place under the broiler until melted.
Top with sliced lettuce, and tomato.
Add the top bread ring, slice and serve.