1. Whisk Group 1 on top speed for 2 minutes. Gradually add in water, turn on medium for 30 seconds followed by top speed by 30 seconds.
2. Turn to low speed, fold in vege oil and mix for 2-3 minutes.
3. Pour into paper line trays of about 3 cm in thickness and bake at 190°C for approximate 23 minutes with stronger bottom heat.
4. Cut into cake bar or decorate into slices with butter cream.