01 - Line a large baking sheet with parchment paper or a silicone baking mat to prevent sticking and facilitate easy cleanup.
02 - In a large mixing bowl, combine Rice Krispies cereal, mini marshmallows, and pecans if using. Mix thoroughly and set aside for later coating.
03 - Place a medium saucepan over medium heat and melt butter completely. Add brown sugar, brewed coffee, espresso powder, and sea salt. Stir continuously until the mixture achieves smooth consistency and just begins to bubble, approximately 2-3 minutes. Remove from heat immediately and incorporate vanilla extract.
04 - Pour the hot coffee mixture over the prepared cereal blend. Using a heat-resistant spatula, fold and stir rapidly until all ingredients are evenly coated with the coffee syrup. Work quickly as the mixture will begin to set.
05 - Using a cookie scoop or tablespoon, drop uniform mounds of the mixture onto the prepared baking sheet. Gently press each mound with the back of the spoon to achieve desired cookie shape. Maintain consistent spacing between cookies.
06 - Place chocolate chips and coconut oil in a microwave-safe bowl. Microwave in 20-second intervals, stirring between each, until completely smooth and melted. Drizzle the chocolate mixture over the formed cookies using a spoon or piping bag for decorative finish.
07 - Transfer the baking sheet to the refrigerator and chill cookies for a minimum of 30 minutes to allow the mixture to firm completely. This step is essential for achieving proper texture and hold.
08 - Keep cookies in an airtight container refrigerated for up to 1 week. Separate layers with parchment paper to prevent sticking.