Peanut butter and banana is a classic combo that's even more delicious with the addition of tangy probiotic-rich kefir. Plus, this peanut butter banana smoothie helps you up your veggie servings for the day with a bit of mild-flavored spinach mixed in.

ingredients

• 1 cup plain kefir

• 1 tablespoon peanut butter

• 1 cup spinach

• 1 frozen banana

• 1 tablespoon honey (Optional)