Made some Brownie Truffles last week for Valentines Day. They were so good.
All you have to do is make some brownies, cut them into 1 inch pieces, put them in the refrigerator for at least an hour.
Then roll each piece into a ball and put back into the refrigerator to get cold again.
Meanwhile melt whatever kind of chocolate (I used dark chocolate) in a double boiler.
When the brownie pieces are cold again roll them in the melted chocolate and place on a piece of parchment paper or wax paper.
You can keep these in the refrigerator for a while but they taste so much better if they are at room temperature.

My favorite Brownie recipe is Outrageous Brownies from Ina Garten (Barefoot Contessa) http://www.foodnetwork.com/recipes/ina-garten/outrageous-brownies-recipe3/index.html