Dairy-free Custard Cream biscuits made with just a few simple ingredients.
In a large bowl, cream together the margarine, caster sugar and vanilla.
Add the flour, custard powder and soy milk. Mix everything together until it begins to stick, then use your hands to press it together into a ball of dough. If it's too crumbly, add a bit more soy milk and if it's too sticky, add some more flour.
Cover the ball of dough and place it in the fridge to chill for 30 minutes.
In the meantime, preheat your oven to 180°C (or 160°C for fan oven) and line a large tray with baking paper.
Once the dough has chilled, gently warm it up in your hands then roll it out on a floured surface until it's ½ cm thick.
Use a Custard Cream stamp (see recipe notes) to cut out your biscuits. Re-roll leftover pieces until all dough is used up. You should end up with around 48 biscuits in total.
Place the biscuits onto your lined tray then pop them back in the fridge for a further 30 minutes.
After chilling, bake the biscuits for 25 minutes. Let them cool completely before removing them from the tray.
Mix the margarine and vanilla extract together in a medium-sized bowl.
Add the icing sugar and soy milk, a little bit at a time, until smooth. Stir in the custard powder.
Pipe the filling onto half of the cooled biscuits then place the other half on top to make 24 sandwich biscuits.