8tablespoonsbutter, salted or unsalted, softened(114 grams)
½cupgranulated sugar(100 grams)
¼cuppowdered sugar(30 grams)
¾cuplight brown sugar(150 grams)
1teaspoonvanilla extract or vanilla bean paste
1largeegg, room temperature (50 grams)
2largeegg yolks
1 ½cupsall-purpose flour(195 grams)
½teaspoonbaking powder
¼teaspoonbaking soda
½teaspoonkosher salt (Morton)
2 cupssemisweet chocolate chips
flaky sea salt
Instructions
These cookies taste much better when made with dough that's been chilled overnight. If you plan on baking a few right away, you can preheat the oven to 375F.
In the bowl of a stand mixer, beat the butter and all three of the sugars for 3-4 minutes. Add the egg and the egg yolks and beat just until blended, scraping down the side of the bowl. Continue beating for another 3-4 minutes or until batter is very fluffy. Beat in vanilla.
Mix together all of the dry ingredients, then add to the batter. Beat at one of the lower speeds until blended, then stir in the chocolate chips.
On a plate lined with plastic wrap, foil or wax paper, drop medium size cookie scoops (or large tablespoons) of dough. Cover and refrigerate until cold, at least 2 hours but ideally a day or two. The longer you chill the dough, the browner your cookies will be.
Preheat oven to 375 degrees F.
Arrange chilled balls of dough on parchment lined baking sheets (or just use one sheet and bake as many balls of dough as you plan to eat). You can bring them to room temperature of bake from cold. Sprinkle some sea salt on top before baking.
Bake on center rack for about 12 minutes or until cookies are brown around the edges.
Let cool for 3 minutes on the baking sheets, then transfer to wire racks to cool slightly before serving.
Notes
It's important to use a margarine that has 100 calories per tablespoon rather than one of the reduced calorie type that contains a lot of water.