Preheat the oven to 350 F. Place half of the Ritz crackers onto a large baking sheet. Place one Christmas marshmallow on each cracker. Bake for 2-3 minutes.
Remove from the oven and sandwich with the remaining half of crackers. Place the chocolate chips into a microwave-safe bowl and heat in 30-second intervals, stirring until it is fully melted and smooth.
Dip half of each s'more into the melted chocolate and set onto plates. Let the chocolate set completely until set.