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How about a 2 ingredient banana oat smoothie that is nutritious, delicious & frugal? It is vegan, GF, and has 6 grams protein & 7 grams fiber per serving.

2 ingredient banana oat smoothie in a glass
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The Best Banana Smoothie

The best banana smoothie is the one you are actually going to make. No unusual ingredients, nothing complicated, but also easy to jazz up if you feel so inclined.

This is it!

It is an ideal smoothie for the New Year, in particular. Too often, New Year’s resolutions feel like cruel tricks: exercise in the snow? Salads in mid-winter? Closet organization with a headcold? Crawling under the covers with a beloved book, hot cocoa on the bedside table, has so much more immediate appeal.

So give yourself permission to rest this month, especially if and when your body (or the weather forecast) is giving unequivocal signs to take it easy. It is just as important, if not more, for keeping resolutions for a happy, healthy, balanced you for the year ahead

This simple smoothie will both pamper and energize you. Frugal, delicious and easy, it contains 2 humble ingredients: bananas (packed with potassium and magnesium for healthy muscle function) and oats.

Go ahead and throw oats into almost everything you can this month–really! They are also rich in vitamin B1, a key nutrient for converting carbs into energy for better workouts and performance. I, for one, need all the help I can get in January to perform in any capacity, so bring on the oats!

Recipe Benefits

  • Vegan (egg-free, dairy-free)
  • Gluten-free
  • High in fiber (7 grams per serving)
  • Good source of protein (6 grams per serving)
  • Excellent source of potassium (great post-workout)
  • Rich in other vitamins and minerals (e.g., vitamins A & C, calcium, and iron)
  • Frugal
  • Quick and easy to make
  • Made with 2 ingredients

Ingredients

The exact amounts of each ingredient are indicated in the recipe card at the end of the post. Toggle between US Customary (volume) and Metric (weights) for preferred measurement option.

  • very ripe bananas (peeled, sliced and frozen)
  • rolled oats (certified gluten-free, as needed)

You will also need some water to blend the smoothie. I use filtered tap water.

The oats are blended until smooth, so you can use any variety of rolled oats you have on hand: old-fashioned oats, quick-cooking oats, or instant oats.

If you would like to add some extras to the smoothie, check out the notes section below or in the recipe card for a host of suggestions.

sliced frozen bananas in a bowl

Step by Step Instructions

Note that the complete directions are also in the recipe card below.

  • Place the cold water and oats in a blender (a smaller bullet blender is ideal). Blend on high speed until completely smooth.
  • Add the frozen banana slices to the blender. Use on/off pulses until completely smooth yet still thick. Serve immediately.

Taste & Texture of the Banana Oatmeal Smoothie

The smoothie has a smoothie, thick, creamy taste–you will not think oats at all! The sweetness is spot on: not too much or too little. Be sure to use very ripe bananas (they are much sweeter, less starchy, then just ripe bananas).

How Can I Make the Smoothie Thicker?

Reduce the water by a few tablespoons or add some ice to the blender.

Optional Additions

The smoothie recipe is perfect in its simplicity, but you can add all kinds of additional ingredients to the original recipe to suit your tastes and needs on any given day. Here are a few:

  • Nuts or Seeds: Add 1 to 2 tablespoons of nuts or seeds, raw or toasted. For example, sunflower seed kernels, green pumpkin seeds (pepitas), peanuts, almonds, walnuts, pecans, chia seeds, or flaxseed meal (add along with the oats in step one).
  • Nut butter or Seed Butter: Add 1 to 2 tablespoons of nut butter or seed butter. For example, peanut butter, almond butter, sunflower seed butter, green pumpkin seed butter, coconut butter, tahini, or roasted chickpea flour butter (add along with the oats in step one).
  • Protein Powder: Add a to 3 tablespoons of your favorite plant-based vanilla protein powder, chocolate protein powder or plain plant-based protein powder (add along with the oats in step one).
  • Flavors: Add a extracts (e.g., a 1/2 teaspoon of pure vanilla extract) or ground spices, such as 1/8 teaspoon cinnamon, pumpkin pie spice, allspice, ginger, cardamom, or a dash of nutmeg.
  • Additional Sweetener: Add a few teaspoons of the sweetener of your choice, such as maple syrup, coconut sugar, agave nectar, monkfruit sweetener, or a sprinkle of stevia.
  • Nondairy Milk: Swap the cold water with chilled nondairy milk of your choice, such as oat milk, unsweetened almond milk, coconut milk, or soy milk.
  • Additional Frozen Fruit: Add in a handful of other frozen fruits, along with the frozen bananas. For example, frozen mango chucks, frozen strawberries, or frozen blueberries
overhead shot of 2 ingredient banana oat smoothie
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5 from 1 vote

2 Ingredient Banana Oat Smoothie (V, GF)

How about a 2 ingredient banana oat smoothie that is nutritious, delicious & frugal? It is vegan, GF, and has 6 grams protein & 7 grams fiber per serving.
Prep Time: 2 minutes
Cook Time: 0 minutes
Total Time: 2 minutes
Servings: 1

Equipment

  • 1 blender

Ingredients 

  • 33 g quick oats, (certified gluten-free, as desired)
  • 3/4 cup cold water, ( I use filtered tap water)
  • 1 large banana, peeled, sliced & frozen
  • Optional add-ins (see notes below)

Instructions 

  • Place the cold water and oats in a blender (a smaller bullet blender is ideal). Blend on high speed until completely smooth.
  • Add the frozen banana slices to the blender. Use on/off pulses until completely smooth yet still thick. Serve immediately

Notes

Optional: Additions
    • Nuts or Seeds: Add 1 to 2 tablespoons of nuts or seeds, raw or toasted. For example, sunflower seed kernels, green pumpkin seeds (pepitas), peanuts, almonds, walnuts, pecans, chia seeds, or flaxseed meal (add along with the oats in step one).
    • Nut butter or Seed Butter: Add 1 to 2 tablespoons of nut butter or seed butter. For example, peanut butter, almond butter, sunflower seed butter, green pumpkin seed butter, coconut butter, tahini, or roasted chickpea flour butter (add along with the oats in step one).
    • Protein Powder: Add a to 3 tablespoons of your favorite vanilla, chocolate or plain plant-based protein powder (add along with the oats in step one).
    • Flavorings: Add a extracts (e.g., a 1/2 teaspoon of pure vanilla extract) or ground spices, such as 1/8 teaspoon of ground cinnamon, pumpkin pie spice, allspice, ginger, cardamom, or a dash of nutmeg.
    • Additional Sweetener: Add a few teaspoons of the sweetener of your choice, such as maple syrup, coconut sugar, agave nectar, monkfruit sweetener, or a sprinkle of stevia.
    • Nondairy Milk: Swap the cold water with chilled nondairy milk of your choice, such as oat milk, almond milk, coconut milk, or soy milk.
    • Additional Frozen Fruit: Add in a handful of other frozen fruits, along with the frozen bananas. For example, frozen mango chucks, frozen strawberries, or frozen blueberries
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Nutrition

Serving: 1smoothie | Calories: 243kcal | Carbohydrates: 54g | Protein: 6g | Fat: 3g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Sodium: 2mg | Potassium: 605mg | Fiber: 7g | Sugar: 17g | Vitamin A: 87IU | Vitamin C: 12mg | Calcium: 22mg | Iron: 2mg
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About Camilla

I'm Camilla, food writer, author, runner, and spin instructor. PowerHungry® is where I share my easy, minimalist, plant-based recipes, designed for living a healthy, delicious, empowered life.

5 from 1 vote

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2 Comments

  1. 5 stars
    Made this today after a 6 mile run– so simple and good,. I added a dash of cinnamon. I feel great for drinking it. Thank you!