Kale and Banana Smoothie Banana helps cut the bitter taste of kale. Combine 1 small banana with 1/2 cup kale 1/2 cup nonfat Greek yogurt 1/4 cup skim milk 2 tablespoons unsweetened apple sauce 1 1/2 tablespoons chia seeds 1/4 teaspoon cinnamon 1/2 teaspoon vanilla extract 1 cup crushed ice