Preheat oven at 350F. Grease and line 8x8 cake pan with parchment paper.

In a large bowl, add the flour, brown sugar, sea salt, baking powder and cocoa powder, and whisk until combined.

In a separate bowl, combine nut milk, egg, vanilla extract and coconut oil and stir.

Pour the wet ingredients into the dry ingredients and stir using a spatula, until you can't see any flour.

Fold in chocolate chunks.

Transfer to prepared pan and sprinkle extra chocolate chunks on top (optional).

Bake for 30-35 minutes until edges start to pull away from the sides.

Remove from oven and let cool for 15 minutes before removing from pan. The center is meant to be very fudgy!

Store in an airtight container for up to 3 days. Refrigerate to keep longer.