Follow these steps carefully for the perfect batch of cookies:

1. Brown the Butter

• In a medium saucepan, melt the butter over medium heat, stirring constantly.
• Keep cooking until the butter turns golden brown and starts to smell nutty.
• Remove from heat and let it cool for 5-10 minutes. This step intensifies the flavor of your cookies.

2. Mix Wet Ingredients

• In a large mixing bowl, add the cooled brown butter, granulated sugar, brown sugar, and vanilla extract.
• Whisk until the mixture is smooth.
• Add the egg yolks and sourdough discard, then beat until the texture becomes light and fluffy.

3. Combine Dry Ingredients

• In a separate bowl, whisk together the flour, baking soda, baking powder, and salt.
• Slowly incorporate the dry ingredients into the wet mixture. Stir gently until fully combined.

4. Add the Chocolate Chips

• Gently fold in the chocolate chips, ensuring even distribution throughout the dough.

5. Chill the Dough

• Cover the dough with plastic wrap and refrigerate for at least 1 hour.
• This step helps the cookies hold their shape while baking and enhances the flavors.

6. Shape and Bake

• Preheat oven to 350°F (175°C).
• Line a baking sheet with parchment paper.
• Roll the dough into 1-inch balls and place them 1.5 inches apart on the sheet.
• Bake for 10-12 minutes, or until the edges turn golden but the center is still soft.

7. Cool & Enjoy!

• Let cookies rest on the baking sheet for 5 minutes before transferring to a wire rack.
• Enjoy warm with a glass of milk, or store them for later!