Molten Chocolate Lava Cakes perform a marvelous trick. Dig into a moist, rich cake and out flows warm dark chocolate. Restaurants serve these elegant little desserts to oohs and aahs. And with our recipe, you can bring the same chocolate drama right to your table in almost no time and with no fuss. The secret is what you do ahead of time, behind the scenes. Whisk up the batter before dinner, or even a day or more ahead. It only takes a few minutes. Then pour the batter into silicone molds or ramekins and store them in the fridge or the freezer. All that’s left is the baking—or should we say, the underbaking. And…