Prep Time 15 minutes mins
Cook Time 18 minutes mins
Resting Time 30 minutes mins
Total Time 1 hour hr 3 minutes mins
For best results, use room-temperature ingredients so the batter and frosting mix smoothly, and avoid overmixing the crushed Oreos into the batter to keep some texture. If your frosting is too thick, add milk a teaspoon at a time until it reaches a pipeable consistency; if too thin, add a bit more powdered sugar. Finely crushing the Oreos for the frosting prevents piping tips from clogging, and placing the cupcakes in the fridge for 15 to 20 minutes after decorating helps the frosting set for cleaner transport and serving. Store leftovers covered in the refrigerator for up to 3 days and let them sit at room temperature for 10 to 15 minutes before eating for the best flavor and texture.