First, gather the 4 ingredients together.

Soften the butter. Room temperature is fine but if you can melt the butter this will be even better.

Preheat the oven to 200C / 180C Fan / 400F.

Add the ingredients to a food processor.

Pulse blend just until the ingredients have mixed together.

Use some extra butter to grease a 20cm x 20cm or equivalent baking tray.

Tip the oatmeal mixture into the baking tray.

Spread the oatmeal mixture to fill the baking tray and press down with a spoon.

Place the baking tray in the oven and bake for 20 minutes.

Once baked remove from the oven and let cool for 10 minutes before cutting into 9 biscuits.

Eat when ready or keep in a sealed container for up to 5 days. Yum!