6tablespoonsunsalted butter plus 1 teaspoon(88 grams)
⅓cupgranulated sugar(65 grams)
⅓cuplight brown sugar(65 grams)
1largeegg yolk
½teaspoonvanilla bean paste or vanilla extract(6 grams)
50gramssourdough discard
¾cupplus 2 tablespoons all-purpose flour (or just weigh)(110 grams)
½teaspoonsalt
⅜teaspoonbaking soda
1cupGhirardelli Bittersweet or Guittard Super Chips
flaky salt for the tops
Instructions
Brown 6 tablespoons (84 grams) of butter in a small saucepan. Set a mixing bowl on a scale and scrape in the browned butter. You should now have only about 65 to 70 grams due to moisture loss. Add the reserved teaspoon (4 grams) of butter to the hot butter and let set. You can do this at room temperature or stick the bowl in the freezer and stir every 10 minutes.
One the butter has set (soft, squishy and opaque) add both sugars to the mixing bowl. Beat with an electric mixer for 1 minute. Add the egg yolk, and vanilla and beat for another minute.
Remove bowl from mixer stand, set on scale and pour in 50 grams of sourdough discard.
Mix together the flour, salt, and baking soda. Add flour mixture to the mixing bowl, and stir to make a soft dough. Stir in the chocolate chips or chunks.
Preheat oven to 350 degrees F.
Scoop out medium size balls of dough and arrange on either plastic wrapped lined plates (for chilling) or directly on a parchment lined baking sheet if you wish to bake right away.
Bake for about 12 minutes or until edges are golden and centers look soft. May take longer depending on oven. See notes if you are using a toaster oven or convection.
When cookies are baked, slide the parchment onto the counter and let cool on the parchment. Transfer to a wire rack to finish cooling. Sprinkle flaky sea salt on top if using.
Notes
In the Breville toaster oven, they only take about 10 minutes at 325 using the Cookies and Convection settings.