I'm sure this has been done before, but I tried these and was pretty happy with the results.
They aren't exactly round or all the same size, but they taste just like the whoppers that you buy. Better, actually because you can use whatever chocolate you prefer.
Here's what I did:
Melt one half cup of almond bark in the microwave.
Add one half cup of malt powder and stir well.
Form into little balls and set on waxed paper to harden.
Melt chocolate of your choice (I used Ghirardelli 60% cacao).
Dip hardened malt in melted chocolate and set on waxed paper to dry.
Eat and enjoy.