Molasses cookies are a holiday must-have, and for most households, so is eggnog. Combine these two classic Christmas season flavors into one delicious sandwich cookie. The sweet, creamy frosting pairs perfectly with the dark molasses and warm winter spices. If you’re looking for a cookie everyone knows and loves, but you want to add a unique twist, this might just be your winner. Plus, who doesn’t love a cookie where you technically get two! Molasses cookies with eggnog buttercream Makes about 24 sandwiches Cookie Ingredients  2 1/3 cups all-purpose flour 2 tsp baking soda 1/2 tbsp cinnamon 1/2 tsp salt 2 tsp ground ginger 1/4 allspice 1/2 tsp ground cloves 1/4 tsp fresh ground black pepper 1 1/2 sticks of butter, room temperature 1 cup packed brown sugar 1/2 cup molasses, non-blackstrap 1 egg 1/2 cup white sugar for rolling cookies, in small bowl Icing Ingredients  6 tbsp butter, room temperature 2…