I have never had a real Mallo Cup, but I am a big fan of the various marshmallow-filled chocolate treats that are widely available around Easter (in the off season, I like getting my fix from See's scotchmallow chocolates, which consist of a layer of honey marshmallow on top of layer of caramel, covered in dark chocolate). So I was thrilled to see Marshmallow Chocolate Cups on this week's schedule for Baked Sunday Mornings. These cups are pure chocolate shells filled with homemade marshmallow.
The chocolate shell is two parts dark chocolate to one part milk chocolate. I used 500 grams of 72% chocolate and 250 grams of 33% milk chocolate -- so I think that if I had simply used 750 grams of 60% chocolate, I would have ended up with exactly the same result. You melt the chocolates together in a double boiler, and then use a brush to coat the insides of candy cups with the chocolate. I used foil candy cups that were 1.25 inches in diameter (across the bottom), and I used a small synthetic paintbrush to paint the chocolate up the sides of the cups. (I keep a set of inexpensive children's paintbrushes in the kitchen to use for applying luster dust and other tasks like this.) You refrigerate the unfilled cups to set the chocolate.
Meanwhile, you make the marshmallow from gelatin, sugar, salt, and water. The marshmallow filling is quite fluid, and it was easy to fill the chocolate cups using a pastry bag. Then I reheated the chocolate and spread a layer over the marshmallow, using the paintbrush get an even coating. After a few minutes in the fridge, the cups are ready.
I am already planning to make these again. I might even see if I can make my own scotchmallows at some point -- but these little cups are so satisfying on their own that I don't think they need any improvement.
Recipe: "Marshmallow Chocolate Cups," from Baked Explorations: Classic American Desserts Reinvented, by Matt Lewis and Renato Poliafito; recipe available here at Baked Sunday Mornings.