01 -
Bring a large pot of salted water to a boil. Add the spaghetti and cook until al dente according to package instructions. Reserve 120 ml of pasta cooking water, then drain.
02 -
While the pasta cooks, heat 2 tablespoons of olive oil in a large skillet over medium heat. Add the sliced garlic and red pepper flakes, sautéing until the garlic is fragrant and lightly golden, about 2 minutes.
03 -
Pour in the canned diced tomatoes, season with salt and black pepper, and simmer for 10 minutes until slightly thickened.
04 -
Incorporate the drained tuna into the sauce, breaking it up gently with a spoon. Stir in the green olives and caperberries, cooking for about 3 minutes until heated through. Add reserved pasta water if the sauce is too thick.
05 -
Add the drained spaghetti to the skillet and toss to coat evenly with the sauce. Drizzle with remaining 2 tablespoons of olive oil. Adjust seasoning with salt and pepper as needed.
06 -
Remove from heat and sprinkle with chopped parsley. Serve immediately, garnished with extra parsley and a drizzle of olive oil if desired.