This refreshing green sour apple smoothie has a nice sour flavor thanks to a granny smith apple, lemon juice, and yogurt, and is very creamy thanks to yogurt and a small amount of frozen banana. It's a great option if you like sour foods and smoothies!
Add ingredients to blender jar: ¼ cup plain yogurt, ½ cored and chopped granny smith apple, 1 cup fresh spinach, ¼ whole frozen ripe banana, 1 Tablespoon ground flaxseed (or not ground), 1-1 ½ Tablespoon lemon juice, ⅓ cup water (or other liquid).
Blend until smooth. Add more liquid if desired. Blend again if needed. Enjoy immediately.
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Notes
Other sour apple smoothie recipes add cucumber and cashews. Both would be good additions, but make the smoothie less tart. You could add about 1 inch of english cucumber and ½-1 Tablespoon cashews if desired.
Swap fresh spinach for frozen, you can use about 1-2 Tablespoons of frozen spinach in this recipe.
You can substitute the water for orange or apple juice, milk, or coconut water. If you want your smoothie more tart, add water or orange juice.
Skip the banana and/or flaxseed if you don't have either. You can add sweetness by adding honey, or your favorite kind of sugar to this recipe. Or juice, adding juice will add sweetness.