Drain tuna thoroughly to remove excess moisture

Add tuna to a mixing bowl and flake with a fork

Stir in mashed white beans for texture and fiber

Add egg, breadcrumbs, onion, garlic, lemon juice, salt, and pepper

Mix until the mixture holds together easily

Shape into small patties using your hands

Heat olive oil in a skillet over medium heat

Place tuna cakes gently into the pan

Cook until golden and lightly crisp on one side

Flip carefully and cook the other side until browned

Remove from pan and set aside

In the same pan, add olive oil for greens

Toss in greens or spinach and cook briefly

Add lemon zest, lemon juice, and a pinch of salt

Stir just until greens soften but remain vibrant

Plate greens alongside warm tuna cakes