In a mixing bowl, beat the Heinz [Seriously] Good Mayonnaise with the peanut butter and vanilla until smooth. Now add the raisins.
4.
In another bowl whisk up the eggs and sugar for 5 minutes.
5.
Gently add the peanut butter and Heinz [Seriously] Good Mayonnaise to the eggs and lastly the flour and baking powder. Fold together and loosen with the milk to a spoon-able loose consistency.
6.
Tip the mixture into the tray and bake for around 25 minutes until the blondies have risen and have a golden crust, they should also be quite gooey in the centre.
7.
Allow to cool before cutting into chucks. These are good served with caramel sauce and a spoon of creme fraiche,