
4 tablespoons unsalted butter, melted
3 tablespoons packed light brown sugar
3 tablespoons pure maple syrup or golden syrup
1 teaspoon pure vanilla extract
1/2 teaspoon ground cinnamon
1/2 teaspoon kosher salt
1/4 teaspoon freshly grated nutmeg
1 3/4 cups old-fashioned rolled oats
1/2 cup raisins
1/2 cup golden raisins