Pecan Sweet Potato Casserole

Ingredients (13)

• 3 pounds sweet potatoes (about 4 medium)
• 1/2 stick (4 tablespoons) unsalted butter, melted
• ½ cup milk of choice
• ¼ cup maple syrup
• ½ teaspoon vanilla extract 
• ¼ teaspoon ground nutmeg
• 1/2 teaspoon fine salt
• 3 tablespoons unsalted butter, softened
• 1/4 cup packed coconut sugar or dark brown sugar
• ¾ cup pecan halves or pieces, finely chopped
• 2 teaspoons finely snipped fresh rosemary leaves (optional)
• 1/2 teaspoon ground cinnamon
• Pinch of fine salt