01 - Line a large baking sheet with parchment paper or a silicone baking mat.
02 - In a large bowl, combine Rice Krispies cereal, mini marshmallows, and toasted pecans. Set aside.
03 - Melt butter in a medium saucepan over medium heat. Add brown sugar, brewed coffee, espresso powder, and salt. Stir constantly until 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 cereal mixture. Quickly stir with a spatula until evenly coated.
05 - Using a cookie scoop or tablespoon, drop mounds 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 completely.
08 - Store in an airtight container in the refrigerator for up to 1 week.