Step 1

Preheat the oven to 360 F (180 C). Line a 12 hole muffin tin with patty cases. In a large mixing bowl, sift the flour, cocoa powders, baking soda, baking powder and then add the sugars – give it a stir. Pop the butter into the microwave for a short burst, 10 seconds or so at a time, until it is JUST melted. Give it a stir with a fork to eliminate any lumps.  In a separate mixing bowl, add the eggs, vanilla and butter and whisk together until smooth. Then add the wet mixture into the dry mixture, along with the buttermilk and gently fold until just combined.

Step 2

Spoon the mixture into the prepared patty cases and pop into the oven. Bake for 18-20 minutes or until just cooked through. Set cakes out onto a wire rack and leave to cool completely.

Step 3

To make the peanut butter frosting, place your butter and peanut butter in a large mixing bowl and beat with an electric mixer until smooth and creamy. Add in half of your icing or powdered sugar and the milk and beat until the frosting starts to come together. Then add the remaining icing or powdered sugar. The icing should be nice and creamy but thick enough to hold its shape. Pipe the icing onto the cupcakes using a piping bag and a large star tip.

Step 4

Cut your Snickers bars into bite sized pieces and add one on top of each cupcake. Enjoy!