How many ounces of marshmallow cream equals one cup of mini marshmallows?

Well, honey, one cup of mini marshmallows is roughly equivalent to about 3.5 ounces of marshmallow cream. So, if you're looking to make a substitution, just remember that and you'll be good to go. Just don't go stirring that cream into your hot cocoa expecting the same texture as those little marshmallow nuggets - it's a whole different ball game, sweetie.