In a medium bowl mix the dry ingredients together (flour, baking soda, salt) and then set aside.
Place the butter in a small saucepan over medium heat. Remove it from the heat and pour it into a medium-sized bowl after it turns golden brown. This type of butter is also known as browned butter.
After the melted browned butter cools down, pour it into a large bowl. Add sugar, a room temperature egg, as well as an extra egg yolk to it. Mix all the ingredients at low speed using a handheld electric mixer.
Pour 1/2 of the flour mixture into the bowl and then mix. Add the rest of the flour as well as the dark chocolate chunks and mix them all until there’s no flour left. At this point, you might have to use a wooden spoon or spatula to mix.After mixing the chocolate chip cookie dough, cover it with plastic wrap and then place it in the fridge for about 20 minutes. This step will help the cookies retain their structure and also make thick chewy chocolate chip cookies.
Using an ice cream scoop, scoop out the dough. Place the cookie dough balls 2 inches apart onto a cookie sheet lined with parchment paper.If you don't have an ice cream scoop, scoop about 3 tablespoons of dough and then form them into a ball.
Place the tray into the preheated oven and proceed to bake them for 10-12 minutes or until the edges are golden brown.
Remove the baked cookies from the oven and then let them cook for about 10 minutes. If you want, you can transfer them onto a cooling rack to cool completely.Repeat this process with the rest of the dough.
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Notes
Tip: For a crisper taste, sprinkle your cookies with kosher salt or flaky sea salt when they're fresh out of the oven!