These small-batch cookie bars are flavored with browned butter and filled with chunks of dark chocolate. They are so good and easy to make!

Let the butter melt in a small metal saucepan. Once melted.

Let it cook further for around 2-3 minutes until the milk solids have caramelized and the butter smells nutty.

Add in the brown sugar, granulated sugar, egg yolk, milk, and vanilla extract and beat it together.

Preheat oven to 350°F (180°C) regular oven, or 320°F (160°C) fan-bake.

In a small bowl, whisk together the flour, baking powder, baking soda, and salt.

Tip the dry ingredients into the wet ingredients and stir them into a thick dough.

Chop the chocolate into chunks and add it to the dough.

Hold back a few chunks to press into the cookie bar later.

Line a standard loaf tin with parchment paper and tip in the cookie dough.

Use a spatula to press the dough down and smooth it out. Press the remaining chunks of chocolate into the dough.

Bake the cookie bars for around 16-18 minutes until the top is set and golden brown and the edges are deeply browned.

The middle of the cookie bar will still be a bit soft.

Remove from the oven and sprinkle with flaky salt.

Let the cookie cool for 20 minutes before slicing.