Mozzarella, Arugula and Marinated Tomatoes on Focaccia Directions
In a large bowl combine tomatoes, onion, vinegar and season with salt and pepper.
Marinate mixture and cover, tossing occasionally, for 30 minutes. Transfer onions and tomatoes to a plate with a slotted spoon. Add arugula to marinade. Toss with salt and pepper. Arrange arugula on one half of Focaccia bread, followed by tomatoes, onions, and mozzarella. Press together gently and cut into 4 pieces.