Line a cookie sheet with wax or parchment paper.
Melt the chocolate wafers as directed on the packaging, and pour them into a disposable piping bag.
Cut the tip off the piping bag and create Mickey Mouse shapes by piping 1 small circle and 2 tiny circles on the corner for the ears. Create as many as you want in different sizes then place them in the freezer to harden.
Preheat the oven to 180°C/350°F/Gas 4.
Spray a 9-inch pie dish with nonstick baking spray.
Lay each of the 5 individual cinnamon rolls out on a cutting board. Cut each individual roll in half and then cut each half into thirds.
Place the cut pieces evenly in the prepared pie dish.
Sprinkle half of the s'mores mix over the cinnamon rolls.
Place the butter in a small pot over medium heat to melt, then stir in the brown sugar.
Pour the melted butter and light brown sugar mixture over the covered cinnamon rolls.
Bake for 30-35 minutes or until the center is completely cooked.
Once baked, remove from oven and allow to cool for a few minutes.
Drizzle the icing that came with the cinnamon rolls over the dish.
Remove the Mickey chocolate shapes from the freezer and carefully peel 1 by 1 off the wax paper. Sprinkle over the cinnamon roll bake. Add extra mini marshmallows if desired.