In a casserole filled with salted boiling water, cook pastas al dente. Drain while being careful to keep for about 125 ml (½ cup) of pastas cooking water.
Meanwhile, heat oil at medium heat in another casserole. Cook onion or half a package of sliced leeks and garlic for 1 to 2 minutes.
Add cherry tomatoes, olives, pesto, pastas and the water used for cooking pastas. Heat up for 1 to 2 minutes while stirring.
Add feta and basil. Pepper and stir.
Did you know that...
Every year, we plant millions of Quebec leeks in the spring, which we harvest from mid-August onwards.