Simmer butterscotch beer over medium heat until it reduces to 1/2 a cup.
Whisk together dry ingredients
In a large bowl cream together butter and sugars.
Add in eggs, vanilla and butter extract.
Mix in butterbeer reduction and melted butterscotch chips.
Bake the cupcakes for 14-18 minutes.
While the cupcakes are cooling, start making the butterscotch buttercream frosting.
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