Chocolate Banana Mousse


2 Tablespoons low-fat milk
4 teaspoons sugar
1 medium banana, cut into quarters
2 teaspoons cocoa powder
1 teaspoon vanilla
1 cup plain low-fat yogurt
Banana slices for garnishing


Place the milk, vanilla, sugar, cocoa powder and banana quarters in a blender and blend until smooth. Transfer to a bowl and gently mix in the yogurt. Chill until set. Spoon mixture into serving bowls and top with banana slices.