Place cocoa, sugar and cornstarch in a saucepan and stir to mix well. Using a wire whisk, slowly stir in the milk and evaporated milk. Place the saucepan over medium heat; cook, stirring constantly, for 5 minutes, or just until the mixture comes to a boil.
Reduce heat to low, add the peanut butter and cook, stirring constantly for 2 minutes, or until the peanut butter has melted.

Remove the saucepan from the heat and stir in the vanilla extract.

Transfer the mixture to a small dessert fondue pot to keep warm. Serve with chunks of bananas, apples, pears, whole strawberries, low fat cookies or whatever you desire.

Nutrition Information:
40 Cal., 0.8 g. fat, 0.5 g. fiber