Measure Rice Chex into a large bowl and set aside.

Put white chocolate chips and shortening into a microwave safe bowl.

Microwave for 1 minute, stir and then microwave for 30 seconds longer.

Add orange flavored oil and stir well.

Pour mixture over the Rice Chex and gently stir to coat.

Put chocolate coated Rice Chex into a gallon sized ziplock plastic bag.

Add the powdered sugar and orange sugar crystals.

Zip the top of the bag shut and shake until the cereal is coated.

Spread on a piece of waxed paper to cool.