1. Grease a donut pan and preheat the oven to 375d.
2. Mix everything well and put into a piping bag. Fill the donut mould up to the edge of the pan.
3. Bake for 15 minutes. Allow for the donuts to cool in the pan for 2-3 minutes and then turn them out onto a cooling rack. Be forceful! Allow them to cool completely before glazing.
4. In a standing mixer (or electric mixer) whisk peanut butter and icing sugar, add melted chocolate and milk and whisk until smooth and creamy. Dip each cooled donut into icing. You will have leftover for another use!