Put all the candy melts in separate bowls and melt in the microwave per the package directions.
With a piping bag or a fork, take the melted orange and drizzle it on the bottom of the molds. Then, do the same with the red. They will cross over each other, it's okay.
Pop the molds in the freezer for 5 minutes.
Take out of the freezer and put 1 tablespoon of the melted white chocolate in all the molds. Use the back of your spoon to smooth it out on the bottom and up the sides. Do this with all 12 molds.
Put back in the freezer for 5 minutes.
Take out of the freezer and give the sides a tap. This will help to loosen the chocolate so you can easily remove from the molds.
You're going to fill Fill 6 of the molds with 1 tablespoon of hot chocolate mix, 1 tablespoon of the crushed Old Fashioned Christmas Candies and 8 mini marshmallows.
Put a microwave-safe plate in the microwave and heat until warm to the touch. Once heated, remove and take the empty chocolate mold and put it face down on the warm plate. This should melt the edge.
Once melted, immediately place on the other half of the cocoa bomb and hold in place. This should make them form a complete circle.
Drizzle chocolate over the top and put some of the crushed candy on top as well.