Potato-Fennel Gratin

PrintPotato-Fennel Gratin Potato-Fennel GratinIngredients2 small fennel bulbs 1 yellow onion, thinly sliced 2 tablespoons good olive oil 1 tablespoon unsalted butter 2 pounds russet potatoes (4 large potatoes) 2 cups plus 2 tablespoons heavy cream 2 1/2 cups grated Gruy√®re cheese (1/2 pound) 1 teaspoon kosher salt 1/2 teaspoon freshly ground black pepper DirectionsPreheat the … Read more