?½ cup sugar 1/3 cup firmly packed golden brown sugar 1 teaspoon ground cinnamon 1/4 teaspoon ground nutmeg 1 3x1/2-inch strip orange peel (orange part only) Position rack in center of oven; preheat to 350 F. Combine first 4 ingredients in saucepan. Bring to boil. Reduce heat; cover. Simmer until fruit is very tender, about 15 minutes. Puree fruit mixture in processor. Mix in ?½ cup sugar, brown sugar, cinnamon and nutmeg. Transfer mixture to 8- inch square glass baking dish; add orange peel. Bake uncovered until mixture is dark and thick, stirring often, about 1 hour 20 minutes. Discard peel. Transfer butter to bowl; cool completely. (Can be made 1 week ahead. Cover and chill.)