Espresso Chocolate Chip Cookies With Brown Butter - Quickie Recipe

Ingredients

• 3/4 cup (170 g) unsalted butter
• 3/4 cup packed (150 g) dark brown sugar
• 1/4 cup (50 g) granulated sugar
• 1 large egg, room temperature
• 1 large egg yolk, room temperature
• 2 teaspoons vanilla extract
• 2 teaspoons to 1 tablespoon instant espresso powder
• 1 3/4 cups (220 g) all-purpose flour
• 1/2 teaspoon baking soda
• 1/2 teaspoon baking powder
• 3/4 teaspoon kosher salt
• 1 cup (170 g) chopped dark chocolate or semisweet chocolate chips
• Flaky sea salt, for finishing