Ingredients
Equipment
Method
- Preheat oven to 350°F (175°C). Line an 8x8 inch baking pan with parchment paper.
- In a large bowl, whisk melted butter, brown sugar, and granulated sugar until combined.
- Add the egg, egg yolk, and vanilla. Whisk until glossy.
- Fold in flour, cornstarch, baking soda, and salt until just combined.
- Stir in the chocolate chips.
- Press dough evenly into the prepared pan.
- Bake for 22-25 minutes until edges are golden. Center should still be soft.
- Cool completely in pan before cutting.
Notes
Do not overbake! The bars continue to set as they cool. Overbaking leads to dry bars.