Prep Time: 15
Cook Time: 18
Serves: Serves: 6
Process garlic in food processor until minced. Add onion, tomatoes, bell peppers and cucumber; process until finely chopped. Add oil and tomato juice; process 15 seconds. Add bread, vinegar, hot sauce and salt; process until thickened and well combined. Transfer to large covered bowl; refrigerate at least 2 hours or up to 24 hours before serving.
Spread butter over one side of each slice of bread. Heat a large skillet over medium heat. Place 3 slices bread, buttered sides down, in skillet. Spoon 1/4 cup cheese over each; top with 3 slices bread, buttered sides up. Cook 3 to 4 minutes until golden brown. Turn; cook 2 minutes more. Sprinkle 1/4 cup cheeses over 3 sandwiches; cover. Cook 2 to 3 minutes more or until cheese is melted. Transfer sandwiches to cutting board; cut each into 4 strips. Repeat with remaining bread and cheese.