the pecans to the consistency of rough crumbs. Toss with the butter, sugars and cinnamon in a small bowl. Spread the mixture out onto a baking sheet and cook in the oven 7 to 10 minutes, until darkened and lightly caramelized. Set aside to cool.
Roll out the puff pastry
on a floured surface to 1/16-inch thickness. Cut the puff pastry sheet into 12 squares, approximately 3 by 3 inches. Lay out on a baking sheet and bake 15 to 20 minutes, until puffed and golden brown. Remove from the oven and set aside to cool.