01 -
In a small bowl, whisk together olive oil, minced garlic, Dijon mustard, salt, and pepper.
02 -
Place the flank steak in a resealable bag, pour the marinade over it, seal, and refrigerate for 1-4 hours.
03 -
Heat the grill to medium-high.
04 -
Grill the steak for 5-7 minutes per side depending on your preferred doneness. Use a thermometer to ensure accuracy.
05 -
Allow the steak to rest for 5 minutes, then slice thinly against the grain.
06 -
In a bowl, combine cherry tomatoes, halved mozzarella balls, and chopped basil leaves.
07 -
Arrange the steak slices on a platter, top with the Caprese mixture, and drizzle with balsamic glaze. Serve immediately.