1. Heat bacon according to package directions until crisp.
2. Stir together cheese, mayonnaise, and garlic. Spread mayonnaise mixture evenly onto 1 side of each bread slice. Layer 3 bread slices, mayonnaise sides up, with 3 bacon slices each. Top bacon evenly with 1 bread slice, tomato slices, and basil. Top each with remaining bread slices, mayonnaise sides down. Cut each sandwich into quarters.