In a microwave-safe bowl, add in the chocolate chips and heavy cream. Microwave for 45 seconds. Stir.
Microwave for an additional 30 seconds and stir until smooth. If there are still lumps. you will need to microwave another 30 seconds.
Pipe the peanut butter pudding in the bottom of the cup or bowl.
Add 1 - 2 tablespoons of ritz crackers on top of the pudding.
Pour a layer of ganache and tap it to cover all the crackers.
Add 1 - 2 tablespoons of Butterfinger baking bits.
Repeat the layers.
Sprinkles Butterfinger bits to the top of the trifles.