Like Lisa, I know that sometimes you get caught thinking, "Yikes, what am I going to take to [insert event here]?" The easiest recipe I know is to take a 12 oz. bag of milk chocolate morsels and melt them over low heat with a can of sweetened condensed milk. Once the chocolate has melted, remove from heat and stir in a 12 oz. bag of either peanut butter chips, white chocolate chips, or mint chocolate chips. Spread into a foil-lined 13 x 9 baking pan. Pop the pan into the refrigerator for about an hour. To cut, invert the pan onto your serving tray, peel off the foil, and cut into 1" x 1" squares. In my experience, the candy can be a little hard to cut so you might want to use an electric knife. But this is a rich, chocolate candy very similar to fudge that most people love.
Happy baking! :)