Finely chop the pecans. I put the pecans into a large mixing bowl and used the butt of my rolling pin. You could also use a large pestle & mortar for the task
In a large mixing bowl, combine 150g/5¼oz of the chopped pecans (reserve the remainder to sprinkle over the top of the plait before it goes into the oven), sugar, cinnamon, maple syrup and butter
Unroll the pastry onto a large baking sheet (still on its parchment paper)