Step 1

Pre-heat your oven to 160C Fan/180C/350F/Gas Mark 4, and grease and line a 12' x 9' traybake tin

Step 2

To make the flax eggs: 2 tbsp linseeds/flaxseeds (ideally ready ground or you can grind them up in a food processor, with a pestle and mortar or spice grinder) soaked in 4 tbsp water for at least 10 minutes in the fridge.

Step 3

In a bowl mix together the plain flour, caster sugar, cocoa powder, baking powder and salt

Step 4

In another bowl or a large jug, whisk together the almond milk, flax eggs, vegetable oil and vanilla extract, then add it to the dry ingredients and mix together

Step 5

Pour the batter into the lined baking tray, then add the broken oreo pieces all over the top

Step 6

Bake for 30-35 minutes or until a skewer comes out clean, leave to cool completely

Step 7

Once cool, melt the dark chocolate and drizzle it all over the brownies, allow the chocolate to set (if you can!), then cut into squares then serve

Step 8

Store in an airtight container in a cool place and eat within 4 days