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In a large mixing bowl or the bowl of a stand mixer, cream together the softened unsalted butter, packed dark brown sugar, and granulated sugar on medium speed until light and fluffy, about 2-3 minutes. Scrape down the sides of the bowl as needed.

Beat in the large egg and egg yolk one at a time, mixing well after each addition. Stir in the vanilla extract until just combined.

In a separate medium bowl, whisk together the all-purpose flour, corn starch, baking soda, baking powder, and salt until thoroughly combined.

Gradually add the dry ingredients to the wet ingredients, mixing on low speed until just combined and no streaks of flour remain. Be careful not to overmix.

Fold in the semi-sweet chocolate chips and chocolate chunks until evenly distributed throughout the dough.

Cover the cookie dough and refrigerate for at least 30 minutes, or up to 24 hours. Chilling the dough helps prevent spreading and results in thicker cookies.

Preheat your oven to 375°F. Line a baking sheet with parchment paper.

Using a large ice cream scoop (about 1/4 cup capacity), scoop generous portions of dough onto the prepared baking sheet, leaving at least 2-3 inches between each cookie as they will spread. You should get about 4 large cookies per batch.

Bake for 12-15 minutes, or until the edges are golden brown and the centers are still slightly soft. For extra bakery-style appeal, you can press a few extra chocolate chips onto the tops of the warm cookies immediately after removing them from the oven.

Let the cookies cool on the baking sheet for 5-10 minutes before transferring them to a wire rack to cool completely. Enjoy your thick, bakery-style chocolate chip cookies!


In a large mixing bowl or the bowl of a stand mixer, cream together the softened unsalted butter, packed dark brown sugar, and granulated sugar on medium speed until light and fluffy, about 2-3 minutes. Scrape down the sides of the bowl as needed.

Beat in the large egg and egg yolk one at a time, mixing well after each addition. Stir in the vanilla extract until just combined.

In a separate medium bowl, whisk together the all-purpose flour, corn starch, baking soda, baking powder, and salt until thoroughly combined.

Gradually add the dry ingredients to the wet ingredients, mixing on low speed until just combined and no streaks of flour remain. Be careful not to overmix.

Fold in the semi-sweet chocolate chips and chocolate chunks until evenly distributed throughout the dough.

Cover the cookie dough and refrigerate for at least 30 minutes, or up to 24 hours. Chilling the dough helps prevent spreading and results in thicker cookies.

Preheat your oven to 375°F. Line a baking sheet with parchment paper.

Using a large ice cream scoop (about 1/4 cup capacity), scoop generous portions of dough onto the prepared baking sheet, leaving at least 2-3 inches between each cookie as they will spread. You should get about 4 large cookies per batch.

Bake for 12-15 minutes, or until the edges are golden brown and the centers are still slightly soft. For extra bakery-style appeal, you can press a few extra chocolate chips onto the tops of the warm cookies immediately after removing them from the oven.

Let the cookies cool on the baking sheet for 5-10 minutes before transferring them to a wire rack to cool completely. Enjoy your thick, bakery-style chocolate chip cookies!
