Preheat the oven to 190 °C or 375 °F or the Gas Mark 5. Grease and flour a baking tray. Sift flour together with salt, baking soda and cream of tartar. Mix in the oats and cinnamon powder. Cream butter and Sugar Free well. Fold in the flour mixture. Add the milk and vanilla essence and mix into dough. Wrap the dough in greaseproof paper or cling film and chill for about an hour in a refrigerator.
6y ago