Add the brown sugar and vanilla paste and stir with a large spoon to combine.
Add the eggs, one at a time, and beat with a spoon for 1-2 minutes until a little bit lighter in colour and really smooth and glossy.
In a separate bowl, whisk together the flour, spices and baking powder and soda and salt. Add to the egg mixture and stir to just combine. Add the pecans and chocolate chunks and fold to combine.
Bake for a further 1-2 minutes or until done to your liking. Leave on the trays to cool. Store in an airtight container.