64-oz. Egg Nog, chilled
1/4 cup firmly packed light brown sugar
2 tbsp. dry instant coffee
1/4 tsp. ground cinnamon
1/2 cup coffee liqueur, optional
1/2 cup bourbon or brandy, optional
1 cup whipping cream
1/4 cup powdered sugar
1 tsp vanilla extract
Additional ground cinnamon

In large mixer bowl, combine egg nog, brown sugar, coffee and cinnamon; beat on low speed until sugar and coffee are dissolved. Stir in coffee liqueur and bourbon if desired; chill. In small mixer bowl, beat cream with powdered sugar and vanilla until stiff. Pour egg nog into punch bowl; top with whipped cream and cinnamon. Refrigerate leftovers.