01 - Line a large baking sheet with parchment paper or a silicone baking mat.
02 - In a large bowl, combine Rice Krispies, mini marshmallows, and pecans (if using). Set aside.
03 - In a medium saucepan over medium heat, melt butter. Add brown sugar, brewed coffee, espresso powder, and salt. Stir constantly until the mixture is smooth and just begins to bubble (about 2–3 minutes). Remove from heat and stir in vanilla extract.
04 - Pour the hot coffee mixture over the Rice Krispies mixture. Quickly stir with a spatula until everything is evenly coated.
05 - Using a cookie scoop or tablespoon, drop mounds of the mixture onto the prepared baking sheet. Press gently to shape if needed.
06 - Melt chocolate chips with coconut oil in a microwave-safe bowl in 20-second increments, stirring until smooth. Drizzle over the cookies.
07 - Chill cookies in the refrigerator for at least 30 minutes to set.
08 - Store in an airtight container in the fridge for up to 1 week.