In a large mixing bowl, cream together butter and sugars until light and fluffy, about 3-5 minutes. Add egg and vanilla, mixing until combined.

In a separate bowl, whisk together flour and baking soda. Gradually add to wet mixture, stirring gently until just combined.

Fold in pistachio cream, chopped pistachios, and chocolate chunks into the dough.

Cover with plastic wrap and refrigerate for at least 30 minutes.

Preheat oven to 350°F (175°C). Scoop rounded tablespoons of dough onto a lined baking sheet, leaving space between each.

Bake for 10-12 minutes, or until edges are golden brown and centers are soft.

Let cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.