Vanilla Bean Sweet Potato Gratin - Rodelle Kitchen

Ingredients

• 4 pounds sweet potatoes or red garnet yams (about 6-8 medium)
• 2 tablespoons unsalted butter, melted
• 2 tablespoons extra virgin olive oil
• 2 teaspoons sea salt
• 1 teaspoon cracked black pepper
• 1 cup heavy cream
• 2 Rodelle Gourmet Vanilla Beans, split lengthwise and scraped
• 1 teaspoon whole peppercorns
• 1 bay leaf
• ¼ teaspoon freshly grated nutmeg
• 3/4 cup hazelnuts
• 1½ tablespoons brown sugar
• 4 teaspoons maple syrup
• ½ teaspoon cinnamon
• ¼ teaspoon salt
• 1/8 teaspoon cayenne