01 - Combine balsamic vinegar and honey in a small saucepan. Bring to gentle boil over medium heat, reduce to simmer. Cook 8 to 10 minutes, stirring occasionally, until reduced by half and syrupy consistency. Remove from heat and cool completely.
02 - Slice tomatoes and mozzarella into 1/4-inch thick rounds. Use small heart-shaped cookie cutter to cut each slice into heart shapes. Reserve trimmings for alternate use.
03 - Alternate layers of heart-shaped tomato and mozzarella slices on serving platter. Tuck fresh basil leaves between each layer.
04 - Drizzle assembled salad with extra-virgin olive oil and cooled balsamic glaze. Sprinkle generously with sea salt and freshly ground black pepper. Serve immediately.