Preheat your oven to 350°F (180°C) and line a baking sheet with parchment paper.
In a saucepan, melt the granulated sugar over medium heat until it caramelizes. Be careful not to burn it!
Pour the caramelized sugar onto a sheet of parchment paper, let it cool completely, then break it into small pieces.
In a bowl, whisk together the flour, baking powder, and salt.
In another bowl, cream together the softened butter and brown sugar until light and fluffy.
Add the egg and vanilla extract, then mix well.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Stir in the toasted, coarsely chopped hazelnuts and the caramelized sugar pieces.
Roll the dough into small balls, then flatten them slightly on the baking sheet.
Bake the cookies for 12-15 minutes, or until golden brown.
Let the cookies cool completely before serving or storing in an airtight container.
To provide the best experiences, we and our partners use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us and our partners to process personal data such as browsing behavior or unique IDs on this site and show (non-) personalized ads. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Click below to consent to the above or make granular choices. Your choices will be applied to this site only. You can change your settings at any time, including withdrawing your consent, by using the toggles on the Cookie Policy, or by clicking on the manage consent button at the bottom of the screen.