Base:

• 100 g butter
• 1 c flour
• ½ sugar

Topping:

• 50 g butter
• 1 egg
• 1 tsp vanilla
• ¾ c walnuts (or your favourite nuts)

For the base, place the chopped butter, flour and sugar into a food processor and whizz until the mixture resembles breadcrumbs. Press into a prepared tin and bake in a preheated oven at 180 C for 15 mins or until firm and golden.

For the topping melt the butter and add in the brown sugar, lightly beated egg and vanilla. Pour this over the cooked base and sprinkle with the coarsely chopped nuts. Return to the oven and cook for a further 20 minutes or until the topping has set.