Melt salted candy melts to the package directions in the microwave.
Add salted caramel candy melts to the dome mold and spread with the back of a spoon. Do this in one thin layer to coat then place in freezer for 10 minutes.
Take it back out and coat only where you can see through the mold. If you cannot see through the mold you do not need to add more. You want the bomb to stay together but not be too thick.
If you add more to the see-through spots then place them back in the freezer for another 10 minutes.
Remove and slowly pop out each side of the bombs. Place on a plate.
On the top of one of the domes used a lighter to heat and press through a skewer to make two holes. I use a longer lighter so that it's easier to light and hold the skewer to push through.
Feed a piece of the Twizzlers through the holes.
Heat a frying pan to low heat. Place one side of the bomb rim down onto the frying pan. This will lightly melt and even out the edges.
Quickly add about 2 tablespoons cocoa mix to the bomb and marshmallows. Melt the other side of the bomb's rim and then place evenly with the other side.
This will seal them together evenly. Do not add hot chocolate to the outside as it will just melt the bomb.
Serve in a cup and pour over hot milk to dissolve the bomb and stir well.