Macaroni and Cheese with Kale

Name: Macaroni and Cheese with Kale
Ingredients: Kosher salt and freshly ground black pepper; 1 pound elbow macaroni; 1/4 cup plus 3 tablespoons extra-virgin olive oil; 1 large bunch of kale, stems discarded, leaves roughly chopped (about 8 cups); 4 garlic cloves, finely chopped; 2 1/2 cups half-and-half; 1/4 teaspoon cayenne pepper; 1/4 teaspoon freshly grated nutmeg; Two 8-ounce packages cream cheese, at room temperature; One 8-ounce block sharp Cheddar, grated; 1 cup grated Havarti cheese; 1 cup panko bread crumbs