These are the ultimate go-to biscuit - incredibly easy, relatively good for you, and perfect with a cup of tea. Better yet, in un-chocolated form they are a classic plain biscuit that are ideal for kids playing pirate ships who want some authentic-looking (but undoubtedly better tasting) snacks.
525g wholemeal flour
150g fine oat meal (can be made by processing rolled oats in blender or simply crushing in batches in mortar and pestle)
1 tsp salt
3 tsp baking powder
75g brown sugar
1/4 to 1/3 cup milk
Dark cooking chocolate, optional
Mix together flour, oatmeal, salt, baking powder and sugar. Rub in the butter until the mixture resembles bread crumbs. Add the milk, a couple of tablespoons at a time until the you have a rough dough. Due to the breadcrumb-like nature of the mixture it is worth adding the milk a little at a time and mixing/forming together with your hands. If you don't make the effort to bring the dough together during this process you can easily end up adding too much milk and having a wet dough.
Put the dough onto a floured surface (its sometimes easier to do this in about 3 batches) and roll out to approximately 4mm thick. Find a glass around 4.5cm in diameter or alternatively use a cookie cutter and cut out the biscuits. Any scraps can be formed together and rolled out again so there's no wastage.
Place on a baking tray and bake at 190 degrees Celsius for approximately 15-20 minutes. They won't colour very much but you can tell when they are done by flipping over and testing the bottom, it should be lightly golden and feel crisp, not doughy.
You can eat them as is, or for a very delicious addition, melt some chocolate over a bowl of simmering water. You can choose how much chocolate you would like, as you may not want to cover the entire batch. When the chocolate has melted and the cookies are cooled, take a spoon and apply a small amount of chocolate to the top of each biscuit, smoothing over the surface. If you would like to really mimic the choc wheaten style you could use a fork to create a pattern in the chocolate.
Allow the chocolate to set and enjoy! Store in a cookie jar, these will stay good for at least a week.