Cookbook

Ingredients

Toffee:

• 1/2 cup unsalted butter
• 1 cup (light) brown sugar
• 1 tsp kosher salt

Brown butter:

• 1 cup unsalted butter
• "2 ice cubes"

Dough:

• 1/2 cup white sugar
• 1 1/2 cup (dark) brown sugar
• 2 tsp espresso powder
• 2 tsp kosher salt
• 1/2 tsp baking soda
• Burnt butter*
• 2 eggs
• 2 tsp vanilla extract
• 2 1/2 cup all purpose flour
• 6 oz chocolate; 70% cacao
• maldon sea salt