This spaghetti recipe is sure to become a summer staple. Instead of slowly simmering the sauce to coat the pasta, cook whole cherry tomatoes with garlic, tomato paste and a bit of hot pepper in a foil packet on the grill. Then toss the pasta with the confit tomatoes and their juices. For added wow factor, prepare a fresh, crunchy gremolata with parsley and pumpkin seeds that will hold up well against the heat of the dish.