INGREDIENTS: 3 1-inch-thick slices country or sourdough bread, cut into ½-inch pieces 6 Tbsp. unsalted butter, melted and divided 1 6-ounce bag Organic Valley Italian Herb Mozzarella shreds 1 tsp. kosher salt, plus more to taste 1 lb. cavatappi, cooked al dente 2 cloves garlic, minced 1/2 yellow onion, diced 2 c. grape tomatoes, halved 1/2 tsp. freshly ground black pepper, plus more to taste 1/2 tsp. red-pepper flakes 1 tsp. dried basil 1 24-ounce jar marinara sauce 1/2 c. heavy cream 1/2 c. loosely packed chopped fresh basil leaves, plus more for serving