Mix flour and marg, stevia and oil and latte granules and choc powder all together like you would a shortbread.
If too dry add oil or margarine, if too sticky add a little more flour.

Press that into a lined square tin and cook for 15 minutes on 168 c in airfryer or cooker. When cooked let cool.

In a saucepan add milk powder, latte granules, choc powder, Stevia and marg and oil and melt in on a med heat. Take it off when it sets together.

Spread the topping over the base and chill in fridge for a few hours.
I keep mine stored in fridge and take when I need one or two.😋😋😋