The Best Chocolate Chip Cookies

Ingredients

• 1 cup unsalted butter (melted and cooled until no longer warm to the touch)
• 1 ¼ cup brown sugar (firmly packed (see note))
• ½ cup granulated sugar
• 1 large egg + 1 large egg yolk (room temperature preferred)
• 1 ½ teaspoon vanilla extract
• 2 ¾ cups all-purpose flour
• 2 teaspoons cornstarch
• 1 teaspoon baking soda
• 1 teaspoon table salt
• 1 ¾ cup semisweet chocolate chips (plus additional for tops, optional)
• flaky sea salt (for sprinkling (optional, but recommended!))

Steps

1. 1

   Combine melted butter and sugars in a large bowl. Stir very well.

2. 2

   Add egg and egg yolk, and vanilla extract and stir well.

3. 3

   In a separate, medium-sized bowl, whisk together flour, cornstarch, baking soda, and salt.

4. 4

   Gradually add flour mixture to wet ingredients — stir well so that all the flour is absorbed.

5. 5

   Stir in chocolate chips.

6. 6

   Place dough in refrigerator and chill for 30 minutes.

7. 7

   Preheat oven to 350F (177C) and prepare cookie sheets by lining with parchment paper.

8. 8

   Scoop dough by rounded 1 ½ Tablespoon (47g) onto prepared cookie sheets, placing at least 2″ apart.

9. 9

   Bake on 350F (177C) for 11 minutes — cookies may still seem slightly soft in the centers, that is OK, they will cook completely on the cookie sheets. Don’t over-bake or your cookies will be too hard.

10. 10

    If desired, gently press additional chocolate chips into the tops of the warm cookies and sprinkle with flaky sea salt.

11. 11

    Allow to cool completely on cookie sheets.