This salty, protein filled open-faced sandwich is perfect for a light lunch or snack.
7 green olives
1/2 red onion
2 tablespoons capers
1 tablespoon tomato paste
2 slices roast beef (not shown)
1 ciabatta bun (not shown)
Start by finely mincing the red onion
Also mince and combine the capers, tomato paste, and olives.
Toast the ciabatta, and lay the roast beef on top
Top with the olive mix.