Western desserts - Cookies Filled with Pistachio Butter

Recipe Ingredients:

Cookie Dough

150g butter

100g icing sugar

Vanilla

A pinch of salt

1 egg

50g pistachios

2 1/3 cups flour

1 tsp baking powder

Filling:

Pistachio butter

Topping:

300g white chocolate

Decoration:

White chocolate

Chopped pistachios

Rose petals