Preheat Your Oven to 180°C (350°F).
Melt the Butter: In a large bowl, add the melted butter, granulated sugar, and brown sugar until well combined (about 2–3 minutes).
¾ cup 150g unsalted butter, softened, ½ cup 100g granulated sugar, ½ cup 100g brown sugar
Add Eggs and Vanilla: Mix in the eggs and vanilla extract until fully incorporated (1 minute).
2 large eggs, 1 tsp vanilla extract
Combine Dry Ingredients: Use a flour sieve to gradually add the flour, then add the baking powder, salt, and cinnamon. Mix gently until just combined—aim for a smooth even batter without lumps (2-3 minutes).
1¾ cup 230g all-purpose flour, 2 tsp baking powder, ½ teaspoon salt, ½ teaspoon ground cinnamon, ½ teaspoon ground nutmeg
Add the Chocolate and Nuts: Stir in the chopped white chocolate, pistachios, and cashews. Reserve a tablespoon of each for topping later.
7 oz. 200g roasted pistachios, chopped, 5 oz. 150g white chocolate, chopped
Refrigerate: Cover the batter and refrigerate for 30 minutes (this helps the cookies stay moist in the center when baked.
Prepare Baking Sheets: Line your baking sheets with parchment paper.
Make Cookies: Use a tablespoon to scoop dough onto the prepared sheets, leaving about 3 inches between each cookie. Add a few pieces of chocolate or pistachio nuts on top of each cookie.
Bake: Bake for about 10 minutes, or until golden around the edges but still soft in the center.
Cool Down: Let them cool on a wire baking rack for 10 minutes before removing from the parchment paper.