Line the baking dish with parchment paper
Melting the chocolate chips and CandiQuik in 30 second intervals, stirring between, until smooth
Add the entire tub of vanilla frosting to the melted white chocolate
Microwave again for 30 more seconds
Mix to ensure the melting chocolate is combined with the melted frosting
Once everything is melted and smooth, separate it evenly into 3 bowls
Quickly stir in food coloring until the desired shades are achieved. Work quickly as it hardens rather quickly. It can be reheated in the microwave if needed!
Add the colored melted fudge into your parchment lined baking dish in various ways.
Add 1/2 of your marshmallows on top
Use a knife or the handle of a spoon to swirl the colors together
When you’re happy with your swirling design, add the second half of the marshmallows on top
Place the dish in the refrigerator for an hour
Remove the fudge from the refrigerator
Pull the fudge out of the baking dish
The parchment paper will easily peel off the sides of the fudge
Cut it into squares using a sharp knife
Cover and store leftover fudge in the refrigerator