01 -
Whisk together balsamic vinegar, olive oil, mustard, honey, garlic, salt, and pepper.
02 -
Pour marinade over steak in bowl, cover and refrigerate for 4-12 hours.
03 -
Grill steak on medium-high heat for 4-5 minutes per side to desired doneness.
04 -
Boil leftover marinade in saucepan until reduced and thickened.
05 -
Blister tomatoes on grill 1-2 minutes per side. Warm bocconcini on grill for 20-30 seconds.
06 -
Slice rested steak against grain, top with reduced sauce, blistered tomatoes, warm bocconcini, and herbs.