Try these out: Joe's Molten Marshmallow-Chocolate Cakes
I used the mini marshmallow (about 10) instead of the big ones. I didn't want to buy a big bag and have them get all hard on me. I might be tempted to use the smaller ones in something else. I must have left my ramekins in Fairbanks but a regular-sized muffin pan worked out just fine. The recipe filled 6 cups perfectly.
Next time I'd like to try the recipe with raspberry-chocolate chips and serve with fresh raspberries. I also saw a suggestion about adding a small spoonful of Nutella along with the marshmallows. And it might be fun to make them in mini-muffin cups and use different flavors of chips.
They disappeared before I got a chance to take a picture!