Preheat oven to broil.
Add olive oil and garlic on the baking sheet. Season with a pinch of salt and pepper. Gently stir to combine and coat surface of baking sheet.
Place broccoli, onion, cauliflower and tomatoes in a single layer on the prepared baking sheet.
Season meat with remaining salt and pepper and add to the baking sheet in a single layer.
Broil until the steak is browned and charred at the edges; about 4 - 5 minutes per side for medium rare, or until desired doneness.
Serve immediately.