Vegan rhubarb & custard bake - Good Food Middle East

Ingredients

• 250g rhubarb, cut into 1in lengths
• 275g golden caster sugar
• 1 tsp vanilla bean paste
• 250g vegan margarine, plus extra for greasing
• 2 tbsp ground flaxseeds
• 150g soya custard, plus extra to serve (optional)
• 250g self-raising flour
• 1 tsp baking powder
• 1 tsp vanilla extract
• 130g unsweetened apple sauce
• icing sugar, to serve (optional)