Olive Oil Tuna Confit Sandwiches on Homemade Crusty Rolls with Basil Pine Nut Spread

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The tuna confit

I need you to forget everything you think you know about tuna sandwiches. Forget the canned tuna mixed with too much mayo on squishy white bread. This sandwich is an entirely different animal. You take a beautiful tuna steak, submerge it in olive oil with smashed garlic, whole peppercorns, fresh thyme, oregano, and a bay leaf, and gently cook it until it turns silky and flakes into luscious, oil-soaked pieces that melt the second they hit your tongue. Then you pile that confited tuna onto homemade crusty rolls that you baked in a Dutch oven so they have that shattering, crackly crust and soft, pillowy interior. And instead of mayo, you slather on a bright basil and pine nut spread that tastes like summer pesto’s more elegant cousin. Every single component is worth making on its own, but together they create something that honestly belongs on a menu at a Sicilian seaside cafe.

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The homemade rolls aren’t optional because the bread makes or breaks this sandwich

I know making bread from scratch sounds like a whole separate project, but these rolls come together with almost no effort. You mix a quick sponge with warm water, yeast, and all-purpose flour, let it get bubbly and frothy, then stir in bread flour, salt, and olive oil to form a shaggy dough. No kneading. You let it rise for a couple of hours until it doubles, then divide it into portions, shape them into rustic rounds, and let them puff up one more time. The secret weapon is baking them in a preheated Dutch oven — the trapped steam creates that bakery-style crust that shatters when you tear into it while the inside stays impossibly soft and airy. You dust the tops with flour, slash them with a sharp knife for that artisan look, and in about twenty minutes you have rolls that smell like a Parisian boulangerie. Once you taste this bread warm from the oven, you’ll understand why I refuse to make these sandwiches on anything else.

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Low and slow is the whole secret to the tuna confit so don’t rush it

Confiting tuna means cooking it submerged in olive oil at a gentle temperature, and the key word here is gentle. You want the oil warm enough that tiny bubbles lazily rise to the surface and the aromatics perfume the kitchen with garlic and herbs, but you never want it to boil or even simmer aggressively. If the oil gets too hot, the tuna tightens up and turns dry and chalky instead of silky and tender. After about ten minutes of infusing the oil with peppercorns, smashed garlic, thyme, oregano, and a bay leaf, you slide the seasoned tuna steak in and let it cook for seven to ten minutes until it flakes easily with a fork but still looks glossy and moist inside. The result is tuna that tastes nothing like what comes out of a can — it’s rich, buttery, deeply savory, and perfumed with herbs. Flake it into big chunks and pile it generously onto your split rolls with that basil spread and you have a sandwich worth clearing your afternoon for.

Watch me make this recipe:

@carmeninthegarden For dinner I upgraded a classic tuna sandwich with freshly baked bread, tuna confit, basil spread, and of course – tomatoes from the garden. 😋 #dinner #sandwich ♬ original sound – Carmen in the Garden

Basil

Olive Oil Tuna Confit Sandwiches on Homemade Crusty Rolls with Basil Pine Nut Spread

Prep: 30

Cook: 45

Total: 195

Silky olive oil-confited tuna piled onto homemade Dutch oven crusty rolls and slathered with a bright basil and pine nut spread. This is the tuna sandwich that will make you forget canned tuna ever existed.

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Ingredients

Crusty Rolls:

• 1 cup warm water (about 110°F)
• 2 1/4 teaspoons active dry yeast
• 1 cup all-purpose flour
• 2 cups bread flour
• 1 1/2 teaspoons kosher salt
• 2 tablespoons extra virgin olive oil

Tuna Confit:

• 1 tuna steak (about 8 ounces)
• Extra virgin olive oil, enough to fully submerge the tuna in a small saucepan
• 4 cloves garlic, smashed
• 1 teaspoon whole black peppercorns
• 4 sprigs fresh thyme
• 2 sprigs fresh oregano
• 1 bay leaf
• 1 strip lemon peel
• Kosher salt

Basil Pine Nut Spread:

• 1 large handful fresh basil (about 2 packed cups)
• 1/3 cup extra virgin olive oil
• 1/3 cup pine nuts, lightly toasted
• Kosher salt and freshly ground black pepper

For Assembly:

• Sliced tomatoes
• Flaky sea salt

Instructions

Make the Crusty Rolls:

1. In a large bowl, combine the warm water, yeast, and all-purpose flour. Stir until smooth — it will look like a thick, shaggy batter. Let it sit uncovered for about 10 minutes until the surface is bubbly and frothy and it smells yeasty and alive.
2. Add the bread flour, salt, and olive oil to the sponge. Stir with a wooden spoon or your hands until a sticky, rough dough forms — it does not need to be smooth or perfectly combined. Cover the bowl with a damp towel or plastic wrap and let it rise in a warm spot for about 2 hours, until the dough has doubled in size and looks puffy with visible air bubbles just beneath the surface.
3. Turn the dough out onto a lightly floured surface. Divide it into 4 to 6 equal portions. Gently shape each piece into a round roll by tucking the edges underneath — do not overwork the dough or you will lose the airy texture. Place the rolls on a parchment-lined baking sheet, cover loosely, and let them rise for another 30 to 45 minutes until they look swollen and spring back slowly when poked.
4. While the rolls rise, preheat your oven to 450°F with a Dutch oven or lidded casserole dish inside. When the rolls are ready, dust the tops generously with flour and slash each one with a sharp knife or razor blade. Carefully transfer them into the preheated Dutch oven, cover with the lid, and bake for 15 minutes. The trapped steam will create an incredible crust.
5. Remove the lid and continue baking for 5 to 10 minutes until the rolls are deep golden brown all over and sound hollow when you tap the bottoms. Let them cool on a wire rack — the crust should crackle audibly as it cools, which is exactly what you want.

Make the Tuna Confit:

1. Season the tuna steak generously on all sides with kosher salt. In a small saucepan, combine enough olive oil to submerge the tuna with the smashed garlic, peppercorns, thyme, oregano, bay leaf, and lemon peel. Heat the oil over medium-low heat for about 10 minutes until the aromatics are fragrant and tiny bubbles are lazily rising from the garlic — the oil should be warm but never boiling or simmering aggressively.
2. Gently slide the seasoned tuna steak into the warm oil. Cook for 7 to 10 minutes, maintaining that gentle heat, until the tuna is cooked through and flakes easily when nudged with a fork but still looks glossy and moist inside. The flesh should be pale pink to beige and pull apart into thick, luscious flakes. Remove from the oil and set aside. Reserve a few spoonfuls of the aromatic oil for drizzling.

Make the Basil Spread and Assemble:

1. Add the basil, olive oil, and toasted pine nuts to a blender or food processor. Blend until smooth but still slightly textured — you want it spreadable, not watery. Season with salt and pepper to taste. It should be bright, herbaceous, and just nutty enough to round things out.
2. Split the crusty rolls in half. Slather the bottom halves generously with the basil pine nut spread. Flake the tuna confit into big, chunky pieces and pile it on top. Add sliced tomatoes, a drizzle of the reserved aromatic oil, and a pinch of flaky sea salt. Press the tops on gently and serve immediately while the rolls are still slightly warm and shatteringly crisp.

Notes

• Tuna selection: Use the freshest tuna steak you can find — yellowfin or albacore both work beautifully for confiting. The cut does not need to be sushi-grade since you are cooking it through, but fresher fish will taste significantly better. Avoid pre-frozen steaks if possible, as they tend to dry out more during cooking.
• Shortcut rolls: If you do not have time to make bread from scratch, the best store-bought substitute is a crusty ciabatta roll or a good-quality sourdough roll. The key is a bread with a hard crust and open, airy interior that can stand up to the oily tuna without going soggy.
• Make-ahead: The tuna confit keeps beautifully submerged in its oil in an airtight container in the refrigerator for up to 3 days — the flavor actually deepens as it sits. The basil spread can be made up to 2 days ahead. The rolls are best eaten the day they are baked but can be refreshed in a 350°F oven for 5 minutes.