In a large bowl whisk melted butter with sugar, give your mixture a quick mix until sugar dissolves. Add all purpose flour and milk powder.

Combine all together until you have a soft cookies dough, (knead the dough if it turn too mushy add more flour, and if it crumble add 1 tablespoon of butter until you have the smooth dough as shown the video below)shape your dough as a large ball.

Cut the dough into two halves, place a half into a bowl. To the remain half add cacao powder, knead with hands until you have a chocolate cookies dough.

Take a large ball and flatten with a roller, cut with cookies cutter as heart shape or as a desired.

Shape cookies as small balls, place them simply in your baking sheet.

With small spoon or with finger press to make a cavity at the middle of the balls, fill with strawberry jam.

Repeat the same with chocolate cookies.

Bake at preheated oven 170°C / 380F for 7 to10 minutes.

Let cookies cool before transfer it.

Decorate the top of cookies with melted chocolate and melted white chocolate.

Fill the chocolate cookies with nutella and jam.