Step 1

Drain the tuna well. In a medium bowl, combine the chunk white tuna with the beans, olive oil, garlic, lemon zest, lemon juice, red onion, rosemary, salt and pepper. Mix well and let sit for 10 minutes up to overnight for flavors to meld.

Step 2

Toast the sourdough toasts until golden brown and divide the tuna among the toasts. Add more salt and pepper to taste.