In a saucepan, pour the cream soda and place it over medium heat. Allow the soda to come to a boil.
Once the cream soda boils, reduce the heat to low and let it simmer until it reduces to half its original volume. This should take about 12 minutes.
Let the reduced cream soda cool to room temperature, then transfer it to a bowl for storage.
Chop your butterscotch chips using a knife or a food processor. Place the chopped chips in a small bowl or on parchment paper for later use.
In a large bowl, add the room temperature butter and use an electric mixer to beat it until it becomes light and fluffy. This usually takes 2-3 minutes.
Add the powdered sugar, vanilla extract, reduced cream soda, and heavy whipping cream to the bowl. Mix all the ingredients together using the electric mixer for 1-2 minutes, or until the mixture is combined and smooth.
Using a spatula, fold in half of the chopped butterscotch chips into the frosting mixture.
Prepare your clean and dry wooden cutting board.
Lay the cutting board on a flat surface, then gather your frosting and the snacks that will accompany the board.
Using the spatula, take a portion of the frosting from the bowl and start spreading it from the top of the board, leaving a decent amount of space around the edges (about half an inch or more). Leave extra space toward the handle for easy transportation if needed.
Sprinkle the remaining chopped butterscotch chips over the frosting, ensuring they are evenly distributed.
Generously sprinkle the Harry Potter-themed sprinkles all over the ButterBeer frosting, adding a touch of magic to the board.
Take your sugar cookies, graham crackers, or any other snacks of your choice, and place them on the open spaces of the board, making sure to leave space at the edge to prevent the snacks from falling off.
Place the completed ButterBeer Frosting Board on a table and get ready to savor the wizarding world flavors!