Cauliflower Gratin with Manchego and Almond Sauce

Name: Cauliflower Gratin with Manchego and Almond Sauce
Ingredients: 3/4 cup half-and-half; 4 tablespoons unsalted butter; 2 tablespoons all-purpose flour; 1 cup whole milk; Pinch of freshly grated nutmeg; Salt and freshly ground pepper; One 2-pound head of cauliflower, cut into 1 1/2-inch florets; 1/2 cup whole roasted almonds with skin, plus 2 tablespoons coarsely chopped almonds (3 ounces); 3/4 cup plus 2 tablespoons finely shredded Manchego or other mildly nutty semi-aged sheep's- or cow's-milk cheese (3 1/2 ounces), such as Gouda; 1 medium onion, finely chopped; 1/4 teaspoon Pimentón de la Vera (smoked Spanish paprika)