2 large ripe bananas, peeled and cut into chunks
2 cups skim milk
1 tablespoon almond butter
1 teaspoon vanilla extract
1 pinch ground cinnamon
Place banana chunks into a sealable plastic bag and freeze until solid, 1 to 2 hours to overnight.
Place frozen bananas into a blender with skim milk, almond butter, and vanilla extract; blend until smooth. Pour into a large glass and garnish with a pinch of ground cinnamon to serve.