01 - Line a large baking sheet with parchment paper or silicone baking mat and set aside.
02 - In a large mixing bowl, combine Rice Krispies cereal, mini marshmallows, and toasted pecans. Mix thoroughly and set aside.
03 - Place a medium saucepan over medium heat. Melt butter, then add brown sugar, brewed coffee, espresso powder, and sea salt. Stir continuously until the mixture reaches a smooth consistency and begins to bubble, approximately 2 to 3 minutes.
04 - Remove saucepan from heat. Stir in vanilla extract until fully incorporated.
05 - Pour the hot coffee syrup over the prepared cereal mixture. Using a spatula, fold and stir rapidly until all dry ingredients are evenly coated.
06 - Using a cookie scoop or tablespoon, drop mounds of the mixture onto the prepared baking sheet. Gently press each mound to form a rounded cookie shape.
07 - Combine chocolate chips and coconut oil in a microwave-safe bowl. Microwave in 20-second intervals, stirring between each, until mixture is completely smooth and fluid.
08 - Drizzle melted chocolate mixture over each cookie using a spoon or piping bag for even distribution.
09 - Transfer baking sheet to refrigerator and chill for a minimum of 30 minutes, or until cookies are completely set and firm.