Set your oven's temperature to 160°C/140°C fan/gas 3. Use parchment paper to line a baking sheet.
Rolling oats, whole wheat flour, self-rising flour,and baking powder should all be combined in a mixing dish.
Use an electric mixer or a wooden spoon to whip the butter and sugar in another mixing dish until they are light and fluffy.
The butter and sugar mixture will be fully blended when you've added the beaten eggs and vanilla essence.
When a dough forms, combine the dry ingredients with the wet ones.
Roll out the dough to a thickness of about 5mm on a flour-dusted board.
The biscuits should be cut out with cookie cuttersbefore being placed on the prepared baking sheet.
For 12 to 15 minutes, or until golden brown, bake the biscuits in the preheated oven.
The biscuits should be taken out of the oven, cooled on the baking sheet for five minutes, then moved to a wire rack to finish cooling.
In an airtight container, biscuits can be kept for upto a week once they have cooled.