
This Mediterranean white bean and tuna salad toast brings the bright flavors of coastal Italy to your kitchen in minutes. The combination of protein-rich tuna, creamy beans, and aromatic herbs creates a satisfying meal that works beautifully for lunch or a light dinner.
I discovered this recipe during a particularly busy work week when I needed something substantial yet quick. Now it's my go-to lunch when friends drop by unexpectedly, always earning compliments despite how simple it is to prepare.
Ingredients
- Canned albacore tuna: Select oil-packed for richer flavor or water-packed for fewer calories
- White beans: Cannellini beans work best with their buttery texture and ability to absorb flavors
- Extra virgin olive oil: Invest in a good quality one as it's the backbone of the Mediterranean flavor
- Fresh garlic: Provides essential aromatic foundation
- Lemon zest and juice: Brightens the entire dish and cuts through the richness
- Red onion: Adds pleasant sharpness and beautiful color contrast
- Fresh rosemary: Brings an earthy pine flavor that pairs perfectly with the beans
- Kosher salt: Enhances all other flavors
- Freshly ground pepper: Adds subtle heat and complexity
- Sourdough bread: Its tanginess complements the salad while providing sturdy structure
Step-by-Step Instructions
- Prepare the tuna:
- Drain thoroughly to prevent a soggy mixture. If using oil-packed tuna, consider reserving some of the oil to replace part of the olive oil for extra flavor.
- Combine ingredients:
- In a medium bowl, add the drained tuna, beans, olive oil, minced garlic, lemon zest, lemon juice, red onion slices, minced rosemary, salt, and pepper. Gently fold everything together, being careful not to break up the tuna too much to maintain texture.
- Allow flavors to develop:
- Let the mixture rest for at least 10 minutes at room temperature. For deeper flavor development, refrigerate for up to overnight, bringing back to room temperature before serving.
- Toast the bread:
- Toast sourdough slices until golden brown with a crisp exterior but still slightly chewy inside. This provides the perfect canvas and structural support.
- Assemble and serve:
- Generously spoon the tuna mixture onto the toasted bread. Add a final sprinkle of salt and pepper to taste, and enjoy immediately while the contrast between crisp toast and tender topping is at its best.

The rosemary is truly transformative in this recipe. Most tuna salads rely on dill or parsley, but the piney, robust flavor of rosemary elevates this from ordinary to extraordinary. My Italian grandmother always said that rosemary is what distinguishes a tourist meal from an authentic Mediterranean dish.
Make It Your Own
This versatile mixture works beautifully beyond toast. Spoon it over mixed greens for a protein-packed salad, stuff it into hollowed tomatoes for an impressive appetizer, or tuck it into pita pockets with cucumber slices for a portable lunch. I've even used leftover mixture as a unique pasta sauce by adding a splash of pasta cooking water to loosen it slightly.
Ingredient Swaps
No need to make a special shopping trip if you're missing something. Chickpeas work wonderfully in place of white beans. If you're out of fresh rosemary, substitute 2 teaspoons dried, or swap in fresh thyme or oregano. Red onion can be replaced with shallots or green onions. For a spicier version, add a pinch of red pepper flakes or a small minced jalapeño.
The Mediterranean Connection
This dish reflects the Mediterranean approach to food, where simplicity, quality ingredients, and balance reign supreme. Similar preparations can be found throughout coastal Italy, particularly in regions like Liguria and Sicily, where seafood and beans are dietary staples. The combination emerged from necessity, as both beans and preserved fish were affordable, nutritious foods that stored well without refrigeration.

A hearty and satisfying toast made with minimal effort that tastes like a trip to the Mediterranean coast.
Frequently Asked Questions
- → Can I prepare the tuna and bean mixture ahead of time?
Yes! The tuna and bean mixture actually benefits from sitting for a while, allowing the flavors to meld. You can prepare it up to 24 hours in advance and store it covered in the refrigerator. Just toast the bread fresh when you're ready to serve.
- → What can I substitute for sourdough bread?
While sourdough offers a pleasant tang that complements the Mediterranean flavors, you can substitute with ciabatta, baguette slices, or whole grain bread. For a gluten-free option, try using sturdy gluten-free bread or even thick-cut sweet potato 'toasts.'
- → Is there a substitute for white beans?
Absolutely! Cannellini beans are traditional, but you can use chickpeas, butter beans, or even navy beans as alternatives. Each will provide a slightly different texture but will work well with the tuna and Mediterranean flavors.
- → What can I serve with these toasts for a complete meal?
These toasts pair beautifully with a simple green salad dressed with lemon vinaigrette. For a more substantial meal, serve alongside a Mediterranean vegetable soup, roasted vegetables, or a tomato and cucumber salad.
- → How should I store leftovers of the tuna mixture?
Store any leftover tuna and bean mixture in an airtight container in the refrigerator for up to 2 days. The olive oil may solidify slightly when cold, but will return to normal at room temperature. Do not store assembled toasts as they will become soggy.
- → Can I use fresh tuna instead of canned?
Yes, you can use about 5 ounces of cooked fresh tuna, flaked into chunks. Sear or poach the tuna until just cooked through, then cool completely before flaking and mixing with the other ingredients.