First were the Snickerdoodle Cupcakes--they taste JUST like Snickerdoodles. I liked them, they are a bit sweet so ONE was good for me. But I would make them again:
Source: Cooking Classy
Combine sugar and salt in a bowl. Combine milk and vanilla in another bowl. Add butter and peanut butter to mixer. Beat until smooth and creamy. Alternately add sugar and milk mixture until fully incorporated. Add additional milk ONLY if needed for a softer consistency. You can also add additional powdered sugar if you need to make your frosting thicker. You want your frosting to resemble this consistency. Frost on top of cooled cupcakes. If desired, pipe melted chocolate on top of frosting and add chocolate sprinkles before chocolate has set.