Bake the cake according to the instructions on the box. Let the cake cool completely after it is done baking.
In a large mixng bowl, crumble the entire cake, breaking it up so there are no chunks. Add in the frosting. Using your hands, mix together until completely combined.
On a baking sheet lined with either a silicone pad or parchment paper, scoop the dough onto the baking sheet until all of the dough has been used. Then roll each scoop into a smooth ball.
In a microwave safe bowl, pour in the milk chocolate baking chips and microwave in 30 second increments, stirring in between each 30 seconds until the white baking chips are completely melted. This usually takes me 1:30-2 minutes.
Take the lollipop sticks and dip one end into the melted chips and stick into the rolled balls of dough. Repeat this step until every ball of dough has a lollipop stick. Place in freezer for 20 minutes.
When the cake pops have been in the freezer long enough, take out and dip each pop in the melted milk chocolate chips. You may find you need to do another 30 second increment or 2 in the microwave. Use a spoon to help the melted chips coat the pops completely. Place the stick in a piece of styrofoam so the cake pop will stand while the melted chips harden. Stick a mini marshmallow on the top, and sprinkle with festive sprinkles before the melted chips harden. Serve immediately, or store in an airtight container for up to a week.