I came across this recipe about 4 years ago. It's almost like an smoothie with alcohol.
1 fluid oz run cream liqueur
1 fluid oz coffee flavored liqueur
1 fluid oz milk (vanilla soy milk works good here too)
1/2 fluid oz strawberry flavored syrup
1 cup crushed ice
Combine the rum cream and coffee liqueur, milk and strawberry syrup in a blender. Add the banana and crushed ice, continue to blend until smooth. Pour into glass and serve.