preheat oven to 350F
unthaw 1 sheet puff pastry according to package directions
flatten slightly on a floured surface
microwave 1 1/2 cup dark chocolate chips + 1/2 tbsp coconut oil until melted
spread half the chocolate on 2/3 of the pastry in the middle
fold over each side towards the middle
spread the rest of the chocolate down the middle of the pastry again
fold the pastry over itself so the sides are on top of one another
cut into 12 even pieces
place on a lined baking sheet and bake for 25 min
dust with powdered sugar