Let cool slightly in the pan. Mix sugar and cinnamon in a shallow bowl. While cupcakes are still warm, dip or roll the tops to coat in the cinnamon-sugar mixture. Add remaining powdered sugar ...

If your buttercream separates, gently warm the exterior of the mixing bowl to soften the butter slightly and help restore its ...

Mix again, then pause to push the mixture down into the bowl using a rubber spatula ... Cheesecake mixtures to be about 50/50. Place the cupcakes in a preheated 325°F oven for 25–28 minutes ...