These crostini are a perfect appetizer for a party or gathering. The flank steak is grilled to perfection and sliced thin, then served on top of toasted baguette slices. The herbed goat cheese is made with fresh herbs like thyme and rosemary, and adds a creamy and tangy flavor to the crostini. Top with a drizzle of balsamic glaze for a delicious and elegant appetizer.