Chocolate Chip Cookies in a Chocolate Chip Cookie

2 c. all-purpose flour
1 tsp. baking soda
1/2 tsp. salt
1 c. (2 sticks) unsalted butter, at room temperature
1 c. light brown sugar
1/2 c. granulated sugar
2 lg. eggs
2 tsp. vanilla extract
3 c. semisweet chocolate chips

Preheat oven to 350°F, and line a baking sheet with parchment paper or a silicone mat.

Sift flour, baking soda, and salt in a medium bowl and set aside. In a large bowl using an electric mixer on medium speed, beat butter, brown sugar, and granulated sugar until blended, about 1 minute. Stop mixer and scrape the sides of the bowl as needed. Add eggs and vanilla and mix until blended, about 1 minute. On low speed, add flour mixture, mixing until just incorporated. Mix in chocolate chips.

Drop 10 heaping tbsp. of dough, 3 inches apart, onto one of the prepared baking sheets.
Set aside remaining dough. Bake until edges of cookies are lightly browned but centers are golden, about 13 minutes. Cool cookies on baking sheet for 5 minutes and then transfer to a wire rack to cool completely.

Break cooked cookies into 1/2- to 1-inch pieces. Add pieces to reserved dough and mix on low speed to distribute evenly, about 10 seconds. Drop heaping tbsp. of new dough about 3 inches apart, and bake for about 13 to 15 minutes, until browned but still soft in the middle.