Cartograph Wines - Recipes - Sweet Potato and Gruyére Gratin

Ingredients

• 3 tbsps unsalted butter, softened
• 1/3 cup grated parmesan
• 2 cups heavy cream (or half-and-half)
• 3 tbsps fresh sage, chopped
• 1 tbsp fresh rosemary, chopped
• 3 cloves of garlic, grated or minced
• 1/4 tsp freshly grated nutmeg
• 1 1/2 tsps kosher salt, plus more as needed
• 3 large eggs, lightly beaten
• 3 lbs sweet potatoes, peeled
• freshly ground black pepper, to taste
• 1 2/3 cups grated Gruyère