Whisk dry ingredients: In a medium-sized bowl, combine the flour, cocoa powder, cornstarch, baking powder, salt, and espresso powder. Whisk and set aside.
1¾ cups all-purpose flour, 1/4 cup unsweetened cocoa powder, 1 tsp. baking powder, 1 tsp. cornstarch, 1/2 tsp. salt, 1/2 tsp. espresso powder
Melt chocolate and butter: In a small saucepan over medium-low heat, melt the chocolate chips, Andes mints, and butter. Stir just until ingredients are melted. Be careful to watch so the chocolate doesn't burn. Remove from heat, stir in vanilla extract, and let cool.
8 Tbsp. unsalted butter, 4 oz. Andes Mints (about 24 mints), 1/2 cup chocolate chips, 1 tsp. vanilla extract
Whisk eggs and sugars: Using a stand-mixer fitted with the whisk attachment, whisk the eggs and sugars for 3-4 minutes or until thick and pale in color.
2 large eggs, 3/4 cup brown sugar, 1/4 cup granulated white sugar
Add chocolate mixture: Using a rubber spatula, stir in the cooled chocolate mixture until well combined.
Combine wet and dry ingredients: Add in the flour mixture and fold until combined. Be careful to avoid over-mixing. The dough will look shiny.
Chill dough: Chill cookie dough in the fridge for at least 10 minutes so the batter can thicken and look more like cookie dough. (Chilling the dough will also help the cookies bake up thicker & help prevent spreading). Preheat oven to 350°F while dough chills.
Scoop: Using a 2 Tbsp. cookie scoop, scoop the batter, and place on a parchment-lined baking sheet. Bake: Bake for 8-10 minutes, or until edges are set and centers still look slightly soft. Immediately after baking, cookie-scoot into perfect circles using a round cutter. Start Timer
Let cool and top with Andes mint: Allow to cool on cookie sheet for 5 minutes, then transfer to a wire rack to cool completely. Once cool, press an Andes mint in the center and sprinkle with flaky sea salt. Enjoy!
Flaky sea salt