4 T. butter, divided 1 yellow onion, cut into medium dice 1 stalk celery, cut into medium dice 2 carrots, cut into medium dice Salt and ground black pepper 2 boiling potatoes, peeled and cut into medium dice 1-1/2 t. about 6 sprigs, fresh thyme leaves, minced (1/2 t. dried) Three 6.5 ounce cans chopped clams and their juice, divided 1 pound of pasta shells 1/4 c. all-purpose flour 1 c. milk 1 c. breadcrumbs 1/4 c. Parmigiano-Reggiano cheese Preheat broiler. Place a large pot of salted water over high heat to boil. Place a large skillet over medium heat with 2 tablespoons of butter. Add the onion, celery, and carrots, season with salt and pepper, and cook until tender but not caramelized, 5-6 minutes. Add the potatoes, thyme, juice of the clams and 1/2 cup of water to the skillet and bring the liquids up to a bubble. Cover the pot, reduce the heat to medium and simmer until the potatoes are tender, 8-10 minutes. While the veggies are simmering, drop the pasta into the boiling water ...