Oven 200C; 170g butter, 260g plain flour, 150g sugar, 1/2 tsp vanilla essence, 1 egg, 1 cup stewed rhubarb, handful of oats.
Cream butter and sugar together, add eggs, add vanilla, add flour, add rhubarb, add oats. Mix well. Blob onto a baking tray and cook for about 12 minutes until golden. They will spread quite a bit so only put about 4/5 per tray.
When cooled, drizzle with icing: icing sugar and a tbsp or stewing juice form the rhubarb.