Ingredients

3/4 pound spaghetti

2 sliced onions

2 tablespoons olive oil

1 pound halved cherry tomatoes

2 ounces grated pecorino cheese

1/4 cup rinsed capers

2 cans drained oil-packed tuna

Lemon zest and juice

Toasted panko

Preparation

Cook spaghetti, reserving 1 1/2 cups pasta water, then drain.

Meanwhile, in a skillet, cook onions in olive oil until slightly golden. Add tomatoes and cook until just soft. Add pasta water and pecorino and heat until thick and creamy. Add pasta, capers, and tuna. Cook until sauce coats pasta. Season with lemon zest and juice. Top with panko.