Line two large half-sheet pans with parchment paper or wax paper and set them aside.

Place 8 cups of Rice Chex cereal into a very large mixing bowl.

In a microwave-safe bowl, combine 18 ounces of chopped almond bark and 1/2 cup creamy peanut butter. Microwave for 60 seconds, stir, and continue in 30-second bursts until smooth.

Stir in green food coloring until the mixture reaches your desired shade.

Pour the green mixture over the 8 cups of cereal. Fold gently until every piece is covered.

Add the powdered sugar to the bowl and fold for 3-5 minutes until the green shows through and the pieces are dry and separated.

Place the green-coated pieces on the first sheet pan to cool.

In a separate bowl, place 3 cups of Rice Chex and melt the remaining 6 ounces of almond bark until smooth.

Pour the melted bark over the cereal and stir until coated. Spread onto the second sheet pan.

Immediately sprinkle the gold sanding sugar over the wet white cereal.

Let both pans sit for 30-60 minutes until set, then break apart any clumps and combine the green and gold pieces in a large serving bowl.