Bold, briny and tangy, this 15-minute pasta is full of personality. Olives are first slightly blistered in oil, drawing out their brininess, then crumbled feta is stirred into the pasta at the end until melty. Keep the feta chunky when breaking it apart so that the squares become soft and creamy, tasting almost baked. Castelvetrano olives are best here for their meaty texture and gentle flavor, but you can also use your preferred olive. Smash them with the flat side of a chef’s knife — or even the heel of your palm in a pinch — then use your fingers to pluck the olive flesh off the pit. Any stubborn meat clinging to the pit is fair game to be eaten then and there.