Hope this meets with your approval Spade... but for fuck sake don't make and eat them like, naw wi' your track record..
Hash Shortbread Recipe
6oz – plain flour
4oz – salted butter
2oz castor sugar
¼ oz hash
(You can add chocolate chips, chopped nuts, spices, lemon / orange zest or vanilla to flavour as desired. For chocolate shortbread replace 1oz flour with 1oz cocoa powder.)
Melt butter gently – heat & crumble hash into it, leave on a very, very low gentle heat for minimum of 30 minutes. Cool and leave butter to solidify again. It won’t look nice, but smells divine!
Either by hand or with a dough hook mixer – combine the butter, flour and sugar together until it forms a smooth, soft pliable dough – knead well to mix all ingredients, but don’t over handle - there should be no mix sticking to the bowl.
Wrap in cling film and leave to rest in the fridge for 10-15 minutes. Flour a work surface / board and roll out dough to ¼ inch thickness, cut into rounds with 2 inch round cookie cutter.
Lay out with space between, for a little expansion, onto a non-stick baking tray. Bake on a low-medium oven setting – approx 150 degree Celsius / 302 degree Fahrenheit for approx10 minutes or until pale and golden.
Cool and sprinkle with extra castor sugar.
I can usually get 60 odd rounds out of this mix. They freeze very well.
Don't eat them all at once!

.... I find on an empty tummy they take about 30mins to come up.
Toying with the idea of making hash ice-cream, don't know if this is daft or what... any comments? :D