Ingredients
Equipment
Method
- Place butter in a light-colored saucepan over medium heat. Cook, stirring constantly, until it foams and turns amber brown with a nutty aroma. Pour into a heat-proof bowl to cool for 20 minutes.
- Preheat oven to 350°F (175°C). Line baking sheets with parchment paper.
- In a medium bowl, whisk together flour, baking soda, fine salt, and instant espresso powder.
- Add brown sugar, granulated sugar, eggs, and vanilla to the cooled brown butter. Whisk vigorously for 2 minutes until glossy.
- Fold the dry ingredients into the wet mixture using a spatula until just combined.
- Stir in chocolate chips and toffee bits.
- Scoop dough into 2-tablespoon balls and place on baking sheet 2 inches apart.
- Bake for 10-12 minutes until edges are golden but centers are still soft. Do not overbake.
- Remove from oven and immediately sprinkle with flaky sea salt. Cool on pan for 5 minutes before transferring to a wire rack.
Notes
Chilling the dough for 30 minutes before baking results in a thicker, chewier cookie.