1 cup iced coffee, unsweetened or sweetened (see here)
1 cup milk
1/2 tsp. vanilla extract
Pull frozen bananas out of the freezer and let them sit on the counter for about 5 - 6 minutes to soften. Cut frozen bananas into halves, then use the knife to make slits on the peel. Peel and slice bananas into 1/2 to 1-inch chunks. Be careful while cutting. Frozen bananas can be slippery!
Using a blender, blend the sliced bananas, iced coffee, milk and vanilla extract until smooth.
Pour into serving glasses. Garnish with optional sliced banana and mint.