Brown the butter

• Melt the butter in a saucepan over medium heat.
• Cook until the milk solids turn golden brown and it smells nutty, then pour into a bowl and let cool slightly.

Mix the wet ingredients

• Whisk the brown sugar and granulated sugar into the warm browned butter.
• Beat in the egg, egg yolk and vanilla extract until smooth and glossy.

Add the dry ingredients

• Whisk together the flour, baking soda and salt.
• Fold the dry mixture into the wet ingredients with a spatula until just combined.
• Stir in the chocolate chips.

Chill the dough

• Cover the dough and refrigerate until firm enough to shape.

Shape the cookie fries

• Roll small portions of dough into thin fry-shaped logs.
• Place them on a lined baking tray, spaced apart.

Bake

• Bake at 180 °C until the edges are set and lightly golden.
• Let cool on the tray for a few minutes, then transfer to a cooling rack.