Place 2 qt metal bowl in the freezer.
Blend tofu until smooth. Blend in the frozen banana & raspberries. Add maple syrup, lemon juice & vanilla. Blend until smooth. Pour into the chilled bowl. Cover with plastic wrap & aluminum foil. Freeze for 4 hours or overnight.
Transfer mousse to a food processor & return the empty bowl to the freezer. Blend the mousse to an ice-cream like consistency. Return to the cilled bowl & freeze for at least 2 hours. Scoop into dessert cups, garnish with fresh raspberries & serve.