The Ultimate Peanut Butter Banana Smoothie

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Sprinkling oats over a peanut butter banana smoothie

If you’re into smoothies that keep you full until lunchtime and don’t require a long list of ingredients or added protein powder, you’ll LOVE this peanut butter banana smoothie! 

It’s super delicious, filling, balanced, and comes together in 5 minutes with 4 simple ingredients! Keep it simple, or add optional spinach, flax, or hemp seeds for a nutrient boost. Let’s do this!

Bananas, spinach, oats, peanut butter, flax seeds, hemp seeds, frozen bananas, and almond milk

How to Make a Peanut Butter Banana Smoothie

Get ready, because we’re about to show you how 4 simple ingredients (!) combine to make a delicious, filling, nutrient-packed smoothie! All that’s required is frozen banana, rolled oats, peanut butter, and your milk of choice (we like almond).

Pouring almond milk over frozen banana and rolled oats in a blender

Frozen banana provides a creamy, naturally sweet base and makes this smoothie thick and chilled without diluting the flavors with ice. When it comes to nutrition, bananas are potassium and vitamin B6 powerhouses and also supply vitamin C, fiber, biotin, and more.

Rolled oats provide plenty of fiber and whole grain goodness, including phosphorous, magnesium, zinc, and even a little protein. Plus, they help thicken it even more for the ideal smoothie texture!

Peanut butter adds a delicious peanut flavor plus protein! P.S. Did you know peanuts outcompete other types of nuts and even rival beans when it comes to protein content (source)? We’re into it.

The final essential ingredient in this smoothie is (dairy-free) milk! It provides the liquid to get this thing blendin’!

Blender with creamy peanut butter banana smoothie

If you’re looking to step up the nutrition even more (and make your smoothie a beautiful green color), throw in a handful of spinach! You won’t even taste it. Pinky promise.

Flax meal or hemp seeds are optional for an omega-3 and fiber boost. And if you prefer more sweetness, then honey, maple syrup, or dates will do that for you. Cinnamon also adds sweetness in its own subtle way!

Pouring a peanut butter banana smoothie from a blender into a glass

We hope you LOVE this smoothie! It’s:

Naturally sweet
Protein-packed (12-16 grams per serving)
& Perfect for on the go!

We love it as a quick, protein-packed breakfast or snack! And since it relies on pantry and freezer staples, it’s perfect for those times when the refrigerator is looking empty.

More Smoothie Recipes

If you try this recipe, let us know! Leave a comment, rate it, and don’t forget to tag a photo @minimalistbaker on Instagram. Cheers, friends!

Sprinkling oats onto a green peanut butter banana smoothie

The Ultimate Peanut Butter Banana Smoothie

A creamy, versatile peanut butter banana smoothie made with oats! The perfect satisfying breakfast or snack, with just 5 minutes and 4 ingredients required!
Author Minimalist Baker
Two glasses of our peanut butter banana smoothie recipe with one having added spinach
4.96 from 22 votes
Prep Time 5 minutes
Total Time 5 minutes
Servings 1 (Smoothie)
Course Beverage, Breakfast
Cuisine Gluten-Free, Vegan
Freezer Friendly 1 Month (in ice cube trays)
Does it keep? Best when fresh



  • 1 cup frozen ripe banana slices (1 medium banana yields ~1 cup slices)
  • 1/3 cup rolled oats (gluten-free certified as needed)
  • 3/4 – 1 cup unsweetened almond milk (or other dairy-free milk)
  • 2-3 Tbsp peanut butter (find our favorite brands here)

ADD-INS optional

  • 1 handful baby spinach
  • 1 Tbsp flaxseed meal or hemp seeds (for added nutrition)
  • 1-2 tsp honey or maple syrup (or a pitted medjool date)
  • 1/4 tsp ground cinnamon


  • Place all ingredients in a blender and blend until smooth and creamy, adding more almond milk to thin, banana or oats to thicken, or peanut butter for richness and peanut flavor.
  • Serve immediately or freeze in an ice cube tray then reblend (adding dairy-free milk as needed) to enjoy later. Texture/flavor is best when fresh.



*Nutrition information is a rough estimate calculated with the lesser amounts of almond milk and peanut butter and without optional ingredients.

Nutrition (1 of 1 servings)

Serving: 1 smoothie Calories: 426 Carbohydrates: 54.6 g Protein: 12.7 g Fat: 20.4 g Saturated Fat: 3.9 g Polyunsaturated Fat: 5.1 g Monounsaturated Fat: 9.9 g Trans Fat: 0 g Cholesterol: 0 mg Sodium: 138 mg Potassium: 819 mg Fiber: 7.7 g Sugar: 19.5 g Vitamin A: 75 IU Vitamin C: 10.3 mg Calcium: 367 mg Iron: 2.5 mg

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My Rating:

  1. Alison says

    I’ve never added raw oats before and now I’m hooked! I used an unfrozen banana and a cup of ice with two soft medjool dates, oat milk, peanut butter no other add-ins. Really amazing.

  2. Rea says

    It was amazing! I love to make smoothies with my boyfriend all the time. The only reason I would give this 4 stars is because it was a little watery for my liking it wasn’t thick enough for us. Ours was like fully melted icecream consistency. Would recommend 😊

  3. Alexis says

    I have a smoothie every morning, this will definitely be going into my rotation. I’ve been using almond butter because that’s what I have on hand and adding spinach & hemp seeds. Super delicious and makes the perfect amount. I love the combo with the oats and getting that fiber. Thanks!!

  4. Casey says

    Love this! Included all the add ins. I was looking for something nutritious that I could share with my 3yo and this is it! The spinach made it greener than I expected, which worried me because she always picks green veggies out of her food, but she still liked it! I didn’t do exact measurements, it turned out more watery than I expected so I added some ice to thicken and that helped. Keeping this one bookmarked. Thank you!

  5. Jennifer Weiss says

    This was delicious! I’ve always wanted to make a peanut butter smoothie, and for some reason today was the day I stumbled on your recipe. I like that it’s not too thick, and uses just a few tablespoons of peanut butter, so really not too fattening at all. Excellent, thanks!

  6. Sinead Black says

    I’ve just come across this mouth-watering recipe… I’m wondering, can I add chia seed instead of flax seed? Also, would it be ok to use frozen spinach, or is fresh better? How about strawberries?
    Thanks in advance ☺️

    • Avatar for Dana @ Minimalist BakerSupport @ Minimalist Baker says

      Hi Sinead, you can use chia seeds instead of flax seeds! We haven’t tried it with frozen spinach or strawberries but we think it could work!

  7. Linsey says

    really simple, delish smoothie! I added all of the add-ins (spinach, hemp seeds, honey [and a date lol], cinnamon) and needed a little more almond milk, so prob used about 1 1/4c — it turned out really good!

  8. Bethy says

    I was skeptical at first but tried it and immediately saved the recipe! Will do again and again! Delicious and creamy and satisfying. I love that it has oats in it too! And i used oatmilk instead of almond milk. Such a great combo with PB and Banana🤎💛 Added a splash of vanilla.

  9. The Vegan Goddess says

    I need to try this! I thought that rolled oats needed to be cooked. I was surprised that you didn’t use oat milk instead of rolled oats.

  10. Abby Cannon says

    This smoothie tastes JUST like the wundershowzen from Juiceland in Austin Texas. My favorite smoothie! Amazing!!

    • Avatar for Dana @ Minimalist BakerSupport @ Minimalist Baker says

      Thanks so much for the lovely review, Abby. We are so glad you enjoyed it! Next time, would you mind leaving a star rating with your review? It’s super helpful for us and other readers. Thanks so much! xo

  11. Sara says

    SO GOOD MAKE IMMEDIATELY! but really. I made the recipe exactly as written, with 1 cup almond milk and added 1 tbsp hemp seeds. I love how creamy this tastes with the blitzed up oats. Thank you!

  12. kungaa joseph says

    I love your recipes; I am on a constant diet to monitor both my sugar and salt intake. Every other day I make a shake with a soy powder. But this makes me feel so much better. Having all the ingredients and knowing what is going into my body. I can not thank you enough for all that you are doing. It has helped me lower my Blood pressure and my sugar.

  13. Bev says

    Craving something thick,creamy and sweet? This recipe is sure to satisfy! I added spinach, flaxseed,hemp seed and a handful of pea sprouts. With all the additions, I had to add some water and ice to get it to my desired consistency. Will definitely add this to my smoothie rotation.

  14. Jeanene says

    Delicious! And very easy. I added cinnamon, which I think really adds flavor. I love this recipe and will make it again and again.

  15. Deepti @ says

    I love banana smoothies. My son loves them too and I add some raw cocoa powder in them for him. And sometimes when I don’t have nut butter, I just add raw nuts such as almonds, or cashews. Tastes just as delicious :)

  16. RunningPath says

    I’ve made smoothies or faux soft serve ice cream from frozen bananas for many years but somehow never thought to use oats. I made this recipe as written (with maple syrup and flax meal, plus salt because my PB is unsalted) and it was the perfect post-run smoothie for me this morning. Very quick to throw together and delicious. My 14-year-olds both loved it too and think it would make a good after school snack (maybe split between them). I definitely recommend adding salt if your PB doesn’t have (especially if consuming post workout).

  17. Sabrina says

    I made this smoothie as written but with a date, cinnamon and chia seeds. It is really good and creamy!

  18. Amanda says

    This was sooo tasty! I’ve made it twice now, once with peanut butter and once with peanut butter powder and hempseeds, both tasted very similar and were great. My 10 year old asks for this every morning! (But I make him rotate through veggie smoothies in between, ha!)
    Thanks for sharing! All of your recipes are so good and I always know they are full of REAL ingredients.

  19. Leah says

    The addition of the oats is brilliant. Smoothies often leave me feeling hungry way before lunch. But this one, made with all of the add ins, keeps me going. It’s also delicious! Thanks Dana!

  20. Laura says

    This is a “full ’til lunch” breakfast smoothie. I was shocked how it kept me going at work all morning. Subbed PB for almond butter. Added 1 date and liked the sweetness. No honey or maple syrup.

    • Avatar for Dana @ Minimalist BakerSupport @ Minimalist Baker says

      Hi Pat, PB2 has a lower fat, protein, and calorie content. It has added sugar and salt, so those would increase since we calculated with natural peanut butter (no ingredients besides peanuts).

      • Megan Bowes says

        Hi! I’ve been enjoying your recipes! Thank you! For those with a food intolerance to bananas, I’m wondering if you (or your readers) have any substitution ideas.

        • Avatar for Dana @ Minimalist BakerSupport @ Minimalist Baker says

          Hi Megan, we find mango to be a good substitute for bananas in smoothies because it’s both sweet and creamy, but not sure it would pair well with peanut butter. We’d suggest checking out our other smoothie recipes here.

  21. Will says

    Great smoothie that does keep you feeling full until lunch. We add Cacao nibs (naturya) that add a chocolatey bitterness and texture.

    • Avatar for Dana @ Minimalist BakerSupport @ Minimalist Baker says

      Love that addition, Will! We’re so glad you enjoyed the smoothie. Thank you for sharing! xo

    • Sarah says

      I’ve been looking into smoothies as a quick and fun way of getting my daily dose of veg and fruit and was pleasantly surprised with this recipe. I add 1/3-1/2 of a hass avocado and a little of adaptogen blend to the recipe and it’s delicious!

  22. Jen says

    This looks absolutely divine but it contains ALL the fat I eat in an entire day. Couldn’t you use the PB2 powder to cut down the fat consumption. 40G of fat in one drink/meal is a ton!

      • Jen says

        Thanks! And I was wrong, it’s only half my fat for the day, 20g with the real stuff. 😆 I’ll try it with the powder.

  23. Rhonda says

    Thank you for this delicious and easy shake recipe! I love that it’s inexpensive, thick and creamy, and uses ingredients I always have on hand. I added a teaspoon of chia seeds and a dollop of honey and will make this again and again :=)

  24. Beth says

    This really DID come together in 5 minutes (or possibly even less) and was delicious and refreshing. My 8 year old loved it too and stole her little brother’s helping. Will definitely make this again.

  25. Paige says

    Absolutely love a peanut butter banana smoothie! I usually add a grind of Himalayan pink salt and a small splash of vanilla extract to really give it that extra punch of flavour. So delicious!

      • Tom Aleksson says

        This is my favorite recipe, it’s simply delicious! A gold standard for a powerful breakfast. In my case I add oats with milk and keep it in the fridge overnight, while in the morning I add honey, raw cocoa and chia seeds before blending.