Preheat oven to 350oF (180oC).
Line a large baking tray with parchment paper. Set aside.
Roll out puff pastry. Using a cookie cutter, cut puff pastry into heart shapes. Then, score a heart shape inside the cut hearts using a smaller cookie cutter. Place 2-3 pieces of chocolate inside the smaller heart.
Bake in preheated oven to 350oF (180oC), rack middle position, 18 or until golden brown.
While still hot, spread the melted chocolate inside the smaller heart using a spatula.
Dust with powdered icing sugar.
Then place 2 pieces of sliced strawberry on top of the chocolate.