This is what Bake Club is all about: getting inspired by what your friends have baked, and customising the recipe to suit what you have available. I only have a bench-top oven at the moment so the only baking tin that can fit is 28 x 22 cm.

I adapted GInny's original recipe a little:

250g butter, softened
1 cup icing sugar
1 cup cornflour
1/2 cup rice flour flour
1 cup gluten free flour mix
1/2 cup cashews, roasted and finely chopped
1 tsp ground cardamom
1/4 tsp ground pepper (I only had black but white also good)

1. Preheat oven to 150C. Cream the butter and icing sugar until pale.
2. Sift the cornflour and flour together and add to the creamed mixture with the cashews and spices. Mix thoroughly.
3. Tip on to a bench and knead. Roll out and fit into a lined baking tin. Bake for about 30 mins. Makes 18 in my lil' tin.