Well Made by Kiley

Preheat the oven to 350F. Line a 8x8” square baking pan with parchment paper; set aside.
Start by browning the butter. Add the butter to a saucepan over medium-high heat. Allow to melt and slightly brown, while stirring continuously (~5-8 minutes). The butter will start to foam and sizzle around the edges. Once some of the foam subsides and the milk solids at the bottom of the pan turn brown and start to smell toasty and nutty, remove from the heat and allow it to cool slightly.
Pour the slightly cooled brown butter into a large bowl. Add the brown sugar and whisk to combine.
Add in the eggs, egg yolk, and vanilla. Stir until fully incorporated.
Then, add in the salt and flour, and use spatula or wooden spoon to mix until just combined.
Fold in 1 cup of the chocolate chips/chunks.
Using a wooden spoon or spatula, transfer the batter to the prepared pan, and press to smooth and reach the corners.
Sprinkle the remaining chocolate chips.chunks on top.
Bake at 350F for 23-25 minutes, or until set but still gooey in the center.
Remove from the oven and allow to cool for 10 minutes before cutting.
Serve warm with a sprinkle of flaky sea salt, if desired.
Enjoy!