Put the balsamic vinegar into a small saucepan over medium-high heat until it comes to a boil. Turn heat down to low and simmer for about 10 minutes, or until the mixture has reduced by at least half, or to a syrup consistency of your choosing.
Slice tomatoes and mozzarella cheese thickly and arrange, along with the basil leaves, in an overlapping pattern on a serving plate.
Drizzle olive oil over top, then the balsamic reduction and serve immediately.
Keyword Caprese Salad
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