Chocolate Banana Oat Smoothie

If you’re looking for a smoothie that tastes like dessert but is packed with nourishing ingredients, you’re in the right place. This chocolate banana oat smoothie is thick, creamy, and tastes like a cross between a milkshake and a frosty; yet it’s made with simple, wholesome ingredients you likely have on hand.

As a former gym owner and nutrition coach, I’ve helped hundreds of busy women find quick, high protein breakfast options they actually enjoy. Smoothies like this one are one of my favorite recommendations, especially for those who need something filling before or after a workout. The combo of protein and carbs in this smoothie makes it both satisfying and energizing, and it takes just minutes to make.

Chocolate banana oat smoothies sitting on as white counter top with oats and cacao nibs sprinkled on top.

If chocolate smoothies are your thing, don’t miss my Tahini Chocolate Smoothie, Chocolate Strawberry Banana Smoothie and Chocolate Mango Smoothie. These are all perfect for a protein packed breakfast or post-workout snack.

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Ingredient spotlight

  • Banana – Naturally sweetens the smoothie and adds creaminess, especially when frozen. The riper the banana, the sweeter the smoothie.
  • Oats – Use rolled or quick oats for best texture. They also make the smoothie really thick and creamy.
  • Cacao Powder – Provides rich chocolate flavor with antioxidants and less bitterness than cocoa powder.
  • Chocolate Protein Powder – Boosts protein and gives the smoothie a thick, milkshake like texture. Vegan protein powder works especially well. Need help with protein powder? Be sure to check out my article on adding protein powder to smoothies.
  • Almond Butter – Makes the smoothie more filling and creamy. Any nut or seed butter can be used as a substitute (another great option would be tahini).
Chocolate oat smoothie ingredients in white ramekins.

How to make a chocolate oatmeal smoothie

  • Measure the ingredients into a high speed blender in the order listed.
  • Blend on high until smooth. Enjoy immediately.

Recipe tip

This recipe was written using a high-speed bullet-style blender. If you have an older or lower-powered blender, pulse the oats first to break them down before adding the other ingredients.

Other additions

  • Crunch: Cacao nibs, coconut flakes
  • Creaminess: Avocado, cashews, canned coconut milk, or greek style yogurt
  • Sweetness: Honey or maple syrup, or add pitted dates, dried figs or a more ripe banana
  • Veggies: 1/2 cup of frozen cauliflower, frozen spinach, frozen kale or zucchini (fresh or frozen)
  • Other: Bee Pollen, maca powder
Chocolate oat smoothies with straws and toppings sitting on a white counter top with bananas in the background.
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Oat Chocolate Smoothie with a straw on a white table with bananas in the background.

Chocolate Banana Oatmeal Smoothie Recipe

This thick and creamy chocolate banana oat smoothie tastes like a milkshake but is packed with protein, fiber, and healthy fats to keep you full for hours. Ready in just 5 minutes with simple ingredients, perfect for breakfast or post-workout fuel!
5 from 1 vote
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Course: Breakfast, Snack
Cuisine: American
Keyword: chocolate banana oat smoothie, chocolate oat smoothie, chocolate oatmeal smoothie
Prep Time: 5 minutes
Total Time: 5 minutes
Servings: 1

Ingredients

Instructions

  • Measure the ingredients into a high speed blender in the order listed.
    1 banana, 1 tablespoon cacao powder, ¼ cup rolled oats, 1 serving chocolate protein powder, ¾ cup dairy free milk, 1 tablespoon almond butter
  • Blend on high until smooth. Enjoy immediately.

Notes

  • Use frozen bananas for the best texture and taste. Frozen bananas chill the smoothie and make it thick and creamy. If using fresh banana, add 1/4–1/2 cup ice and reduce the liquid by 1/4 cup.
  • Add more or less liquid to adjust the texture. Use less for a thicker smoothie, more for a thinner consistency.
  • If not using protein powder, add a sweetener. The protein powder adds sweetness and protein. If skipping it, add maple syrup, honey, or 1–2 medjool dates to balance the flavor.

Nutrition Information

Nutrition Facts
Amount per Serving
Calories
415
Fat
 
15
g
Carbohydrates
 
54
g
Fiber
 
14
g
Sugar
 
16
g
Protein
 
27
g
Where does nutrition info come from? Nutrition facts are provided as a courtesy, sourced from the USDA Food Database.
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Common questions

Why put oats in a smoothie?

Oats are a great source of protein and fiber help to make this smoothie extra thick, creamy and delicious. I recommend using rolled oats or quick oats.

Chocolate oatmeal smoothie overhead view. The smoothie has oats and cacao nibs on top and is sitting on a white counter top.

Can I use fresh banana?

Yes, just add 1/4-1/2 cup of ice to get the same creamy consistency and reduce the liquid in this recipe by 1/4 cup. 

How to freeze bananas for smoothie?

Slice the banana into coins then place on a parchment paper or wax paper lined baking sheet to freeze the banana. Once the banana coins are frozen, transfer to a freezer safe bag or container.

Oat chocolate smoothie being poured into a glass.

Can I make this chocolate smoothie without bananas?

Yes, you can substitute the banana with an additional 1/4 cup of oats or a half of an avocado and add sweetness from maple syrup, honey or dates. Another great alternative would be frozen mango.

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4 Comments

    1. I cannot comment on if this smoothie is good for your health condition. If you are worried about the natural sugars in banana, you could use half the amount listed or omit the banana and add a few frozen ice cubes to get the same consistency. Hope that helps!

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