1. Melt the butter and let cool down again. Chop the chocolate candy bars and cookies coarsely and set them aside.

2. Add both sugars and the melted butter to a large bowl and mix until light and fluffy for about 2-3 minutes. Add the egg and vanilla extract and mix well. Mix the flour with baking soda, and salt and add to the bowl – mix until just combined. Add about 3/4 of the chopped chocolate candy bars and cookies and fold in. Cover the dough and place it in the fridge for about 1 hour.

3. Preheat the oven to 360°F (180°C). Line a baking sheet with baking parchment. Use a cookie scoop or two tablespoons and place dough portions with enough space in between on the baking sheet. Press some of the remaining chopped chocolate candy bars and cookies into the dough portions and bake for about 11 minutes. The edges of the cookies should be firm but the centers should still be a bit soft. Take out of the oven and let cool down on the baking sheet for some time. Transfer to a wire rack and let cool down completely. Repeat with the remaining dough.