You can leave these little cakes plain - trust me, they are delicious as is or decorate them.
For other options, you can dust them with icing (powdered) sugar (they look so cute and snowy that way) or glaze them. For a simple glaze, use about 3/4 cup of icing sugar and add as much milk as needed to make it the consistency you like. Leave as is or add a dash of cinnamon to it. Or use some eggnog in place of the milk. Sugared cranberries (SO easy to do) are a beautiful accompaniment for these too.
Molasses substitute: 1/4 cup sugar, 1/3 cup brown sugar, 1 tsp. maple syrup, and enough water to make this equal 3/4 cup as a substitute.
Buttermilk substitute: 1/2 Tbsp. white vinegar (can also use lemon juice instead) in a measuring cup. Fill to the 1/2 mark with milk. Let stand for 5 minutes before using.