In a medium size microwave-safe mixing bowl, combine almond bark, and peanut butter chips, and microwave them on high for 1 minute. Remove from the microwave and stir, if needed continue to microwave at 30-second intervals until completely melted.
Next, place Chex cereal in a large mixing bowl. Pour in melted chocolate/peanut butter mixture into the cereal and stir until well combined.
Pour cereal mixture into a gallon-size freezer bag and add powdered sugar. Shake until cereal is completely coated.
Next, pour the coated cereal onto a parchment paper-lined cookie sheet. Gently add pretzel sticks, autumn candy mix, Reese’s Pieces, Reese’s Peanut butter cups, and sprinkles.
Pour the mix into a serving bowl or an air-tight container and enjoy!