I know I've seen a recipe for this somewhere. Does anyone know how to make it? Has anyone done it before?? Thanks a ton!

I saw a recipe with candy melts added for that. I am not sure how much though. I hope someone else knows!

From Wiltons discussions boards:

For Chocolate Marshmallow Fondant:
Add 1 oz melted chocolate.
1 tbsp cocoa powder to the basis recipe.

For White chocolate Marshmallow fondant:
Add 1 oz (maybe 1 1/4 oz) good quality white chocolate, melted to the basic recipe above.
I use this if I want a white chocolate flavor and a "white" color.

Do you know if this is added to the small or large recipe??

it was for the reciepe using 1 cup of marshmallows.