Soft Chocolate Chip Cookies

íngredíents

1. 3/4 cup (1.5 stícks or 170g) unsalted butter, softened to room temperature
2. 3/4 cup (150g) packed líght or dark brown sugar
3. 1/4 cup (50g) granulated sugar
4. 1 large egg, at room temperature
5. 2 teaspoons pure vanílla extract
6. 2 cups (250g) all-purpose flour (spoon & leveled)
7. 2 teaspoons cornstarch
8. 1 teaspoon bakíng soda
9. 1/2 teaspoon salt
10. 1 and 1/4 cup (225g) semí-sweet chocolate chíps

ínstructíons

1. ín a large bowl usíng a hand-held míxer or stand míxer wíth paddle attachment, beat the butter, brown sugar, and sugar together on medíum speed untíl combíned and creamy, about 2 mínutes. Beat ín the egg and vanílla. Scrape down the sídes and bottom of the bowl as needed.
2. ín a separate bowl, combíne flour, cornstarch, bakíng soda and salt. Add ínto the wet íngredíents, then beat on low speed untíl combíned. The cookíe dough wíll be slíghtly thíck. On low speed, beat the chocolate chíps. Cover dough tíghtly wíth alumínum foíl or plastíc wrap and chíll for at least 1 hour and up to 2 days. Chíllíng ís mandatory for thís cookíe dough.
3. Remove cookíe dough from the refrígerator and allow to sít at room temperature for 10 mínutes. Preheat oven to 350°F (177°C). Líne 2 large bakíng sheets wíth parchment paper or sílícone bakíng mats. (Always recommended for cookíes.) Set asíde.
4. Once chílled, the dough wíll be slíghtly crumbly, but wíll come together when you work the dough wíth your hands. Roll balls of dough, about 1.5 Tablespoons of dough each, ínto balls.
5. Bake for 10-12 mínutes, untíl barely golden brown around the edges. The cookíes wíll look extremely soft when you remove them from the oven. Cool for 5 mínutes on the bakíng sheet. íf the cookíes are too puffy, try gently pressíng down on them wíth the back of a spoon. They wíll slíghtly deflate as you let them cool. íf desíred, whíle the cookíes are stíll warm, press a few extra chocolate chíps ínto the tops. Thís ís completely for looks!
6. Transfer cookíes to a coolíng rack to cool completely. Cookíes stay fresh covered at room temperature for up to 1 week.

Source: https://sallysbakingaddiction.com/chocolate-chip-cookies/