Preheat the oven to 180°C and line 2 trays with baking paper.
Place the dairy-free margarine in a saucepan and melt over a low heat.
Weigh the sugar into a bowl.
Take the saucepan off the heat and add the sugar. The sugar should melt and be the consistency of runny honey.
Mix the gluten-free flour, bicarbonate of soda and salt in a bowl.
Add the egg to the dairy-free margarine in the saucepan and mix until it's combined.
Pour the dairy-free margarine mix into the bowl with flour in it.
Add the dairy-free chocolate chips and mix it together. It should be a wet dough. You shouldn't be able to roll it.
Place spoonfuls of dough onto the tray. Leave space between them as they'll spread.
Bake for 15 minutes. Until golden, crispy.