Prepare a large tube or bundt pan by spraying with cooking spray.

You start with 2 bags of buttered microwave popcorn in a large bowl.

Pick out the kernels that didn't pop.

Now mix in 2 cups of chocolate chips/M&M's and 1½ cups broken pretzel sticks.

Now melt 1 stick of butter over low in a large saucepan or microwave.

Once melted, add in a 16 oz bag of mini marshmallows (8 cups).

Stir until melted and smooth.

Remove from heat and pour over your popcorn mix.

Stir until all the ingredients are combined and then press into the prepared pan.

Cover with foil and let your cake set for at least an hour to cool.

When you are ready to serve the cake loosen sides of your cake from the pan by running a butter knife around the edges.

Flip your pan over onto your serving platter. Your cake should come out pretty easily. You want it to cool completely so it will cut easily.

Cover tightly and store for up to 1 day.