House & Home - Chewy Brownie Cookies

Ingredients

• ¾ cup finely chopped semisweet or bittersweet chocolate
• ½ cup unsweetened cocoa powder
• 1 tsp espresso powder
• 8 tbsp (1 stick) unsalted butter
• 2 large eggs, at room temperature
• ¾ cup granulated sugar
• ½ cup packed dark brown sugar
• 1 tsp kosher salt, such as Diamond Crystal
• 2 tsp pure vanilla extract
• ¾ cup all-purpose flour
• Flaky sea salt, for finishing