Step 1

Preheat oven to 325℉. Line a baking sheet with parchment paper.

Step 2

Combine the soft butter, brown sugar, and granulated sugar in a large bowl. Mix on medium-high speed with a handheld or stand mixer until light and fluffy. Stop the mixer once and scrape the bottom and sides of the bowl.

Step 3

Add the egg and vanilla extract. Mix on medium-high speed until very light. Stop the mixer and add the flour, baking soda, and salt. Mix on low speed until a dough forms. Stop the mixer. Stir in the chocolate chips with a wooden spoon or firm rubber spatula.

Step 4

Drop dough, about two tablespoons each, onto the prepared baking sheet.

Step 5

Bake until edges are set, about 12 minutes. Don’t overbake or cookies won’t be soft.

Step 6

Store cookies in an airtight container. For extra-soft cookies, place the warm (not hot) cookies into an air tight with a lid. Cover for 24 hours.