Ingredients: 1 pound conchiglie (small shells) pasta 1 pound broccoli, cut into florets (about 4 cups) 1/4 cup extra-virgin olive oil 3 cloves garlic, minced 1/8 teaspoon red pepper flakes 1/2 teaspoons kosher salt 1/4 teaspoon freshly ground black pepper 1 pound small littleneck clams, …