Good morning! Like cereal? Blogger From Away, based in Portland, Maine, has made Cinnamon Toast Crunch cupcakes and has the recipe, which includes Cinnamon Toast Crunch buttercream! Here's a snippet of the recipe: "Crush approximately one cup of cereal using a rolling pin, and sift into a bowl. Repeat as needed, setting aside the bigger bits left in the sifter, until you have 1/3 of a cup of very fine Cinnamon Toast Crunch powder."