In a large bowl, add cereal; set aside.
In a medium sized, microwavable bowl, microwave the chocolate chips, peanut butter and butter, uncovered, in 30 second increments until mixture can be stirred smooth.
Add vanilla and pour mixture over cereal, stirring until evenly coated.
Pour contents of bowl into a 2-gallon resealable food storage bag.
Add powdered sugar. Seal bag and shake until well coated.
Spread on wax paper to cool.
Once cooled, add chocolate coated Chex back into large bowl and add pretzels and Sun-Maid Yogurt raisins. Mix and serve.
*used a mixture of Strawberry, Vanilla & Chocolate for this Holiday Mix.