Name: Banana Oatmeal Smoothie with Peanut Butter
Prep time: 3 min
Total time: 3 min
Yield: 1
Ingredients: 1/4 cup oats; 1 banana, frozen and cut into chunks; 1/2 cup milk; 1 tablespoon creamy peanut butter; 1 tablespoon maple syrup; 1/2 teaspoon ground cinnamon; 1/8 teaspoon salt

This thick and creamy banana oatmeal smoothie with peanut butter is a wholesome and delicious breakfast smoothie that's perfect for busy mornings. This smoothie features a blend of rolled oats, peanut butter, frozen banana and cinnamon, sweetened with a touch of maple syrup.

Homemade banana oatmeal smoothie with peanut butter, garnished with slices of bananas, oats and peanut butter drizzle.

Jump to Recipe

If you like oatmeal for breakfast, you’re going to love this Oatmeal Banana Smoothie with Peanut Butter. It’s like breakfast in a cup, and every sip is beyond delicious.

I love fruit smoothies, but sometimes I want something with a warm spice flavor, especially in the cooler months, and this smoothie recipe is all that. Honestly, it reminds me of a cozy cinnamon oatmeal cookie.

This oatmeal smoothie is a great way to start the day. The oats provide fiber and make it filling, and the frozen banana gives it sweetness and a smooth texture.

A scoop of all-natural peanut butter infuses it with a nutty flavor, and cinnamon spice brings it all together.

If you’re looking for a new smoothie recipe to add to your diet, this one is definitely worth trying. It’s one of my favorites!

A four-grid image showing a homemade oatmeal smoothie with banana, oats and peanut butter, a picture of the ingredients, a picture of the blender with smoothie ingredients, and a picture of the thick and creamy blended smoothie being poured into a cup.

Can you put oats in a smoothie?

Oats are a great addition to smoothies. Not only are they a good source of fiber, but they add a slightly nutty flavor, and make the smoothie rich and filling.

Old-fashioned rolled oats are the best type of oats to use for smoothies, but quick oats will work too.

Just avoid steel-cut oats. They are thicker and don’t blend as well.

A homemade banana smoothie in a glass showing the top of the smoothie that is garnished with a few slices of banana, some oats and a little peanut butter. The smoothie has a glass straw, is on a wooden coaster and next to a spoon with a scoop of peanut butter in it.

Why You’ll Love this Smoothie Recipe

Cozy alternative to fruit smoothies. While smoothies are a cold drink, this smoothie with cinnamon, oats, nut butter and maple syrup has a lot of warm-spiced, cozy flavors. When you’re craving a smoothie, but don’t want fruits and veggies to dominate, this oatmeal smoothie is an excellent option.

Affordable. This smoothie is made with ingredients you probably already have in your pantry and fridge, making it budget-friendly.

Adaptable. When it comes to smoothie recipes, variations and adaptations are limitless. Use plant-based milk and oats labeled gluten-free to meet dietary preferences. For more protein, add in Greek yogurt or protein powder. To reduce sugar content, skip the maple syrup and swap banana for cauliflower.

Easy to meal-prep into freezer packs. Smoothies are already simple to make, but smoothie freezer packs, prepped in advance, truly make this a dump-and-blend recipe. (See below for smoothie freezer pack instructions.)

A top-down look at a delicious banana oatmeal smoothie that has banana slices, peanut butter and oats sprinkled on top. The smoothie is next to a scoop of peanut butter, bowl of oats, and small bowls with maple syrup and cinnamon.

How to Make a Banana Oatmeal Smoothie with Peanut Butter

To make this smoothie you need to freeze a banana ahead of time. (I do this whenever I have an overripe one that’s about to go bad.)

You also need a blender.

For convenience, I make it in my Ninja Nutri Pro personal cup blender, as seen in photos below. I love that you can drink out of it, it’s light weight, and easy to clean up!

Ingredients Needed

Oats – Use old-fashioned rolled oats or quick oats. I do not recommend steel-cut oats. My favorite brand is Bob’s Red Mill GF Organic Old-Fashioned Rolled Oats.

Frozen Banana – Smoothies are a great way to make use of overripe bananas. Not only do they provide the smoothie with natural sweetness, but frozen bananas make the smoothie nice and thick.

Next time you have a banana whose peel is turning black, peel and slice it into one-inch chunks and place in the freezer.

When you’re ready to make this banana oatmeal smoothie or this strawberry banana smoothie, or my favorite banana matcha smoothie, just grab 8 chunks to blend.

Creamy Peanut Butter – Use your favorite brand of all-natural peanut butter. The ingredients should just list the nut and maybe salt.

I use the peanut butter I make at Whole Foods with their nut butter machine. I love that the only ingredient is peanuts.

Wondering if you can use powdered peanut butter like PB2 in smoothies? Powdered nut butters, from peanut, to cashew and almond, are a convenient way to add nutty flavor and healthy fats to smoothies. If you use a powdered nut butter, add an additional tablespoon of milk to the blender per tablespoon of powder.

Milk – Any type of milk works for this smoothie. I simply use dairy milk, but you can use non-dairy milks like oat, almond or soy. For this smoothie flavor, I don’t recommend coconut milk.

Maple Syrup – Maple oatmeal is a classic breakfast favorite. A little bit of pure maple syrup in this oat smoothie adds some sweetness and distinct maple flavor.

Cinnamon – Ground cinnamon is a must in this oatmeal smoothie recipe. It adds warm-spiced notes and ties the whole smoothie together.

Salt – Salt enhances all the sweet and nutty flavors going on in this smoothie.

Oatmeal is a bland without salt, and so I really recommend not skipping it in this unless you have a dietary restriction.

Table salt vs. kosher salt. Is there a difference? Table salt has smaller crystals than kosher salt and should not be substituted for kosher in equal amounts. Generally, if a recipe calls for kosher salt, use half the amount of table salt.

Instructions

Detailed recipe and instructions are in recipe card at bottom of post.

Add oats to a blender, and blend until they turn into powder (about 10 seconds).
Add frozen banana chunks, peanut butter, maple syrup, cinnamon, salt and milk to the blender.
Blend for 30 seconds until smooth and creamy. Use the smoothie button if your blender has one. Otherwise, pulse 3-4 times, then blend on high.

Blend the oats.

The first step to making an oatmeal smoothie is add oats to blender cup.

Oats that have been blended and turned into powder, in a blender cup with the lid on top.

Add frozen banana, peanut butter, milk and remaining ingredients.

A blender cup with all the ingredients in it needed to make a banana oatmeal smoothie, including oats, frozen banana chunks, peanut butter, maple syrup, cinnamon, salt and milk.

All the ingredients needed to make a banana oatmeal smoothie with peanut butter in a personal blender cup with the lid screwed on ready to blend.

Blend and enjoy smoothie immediately.

Pouring a thick and creamy, blended banana oatmeal peanut butter smoothie into a tall glass.

A banana oatmeal smoothie in a glass with straw, garnished with slices of banana and oats, and ready to drink.

Recipe Tips

For a thicker smoothie add Greek yogurt or more banana or oats.
For more protein, add Greek yogurt or your preferred protein powder. Whey protein is a good option for this smoothie.
To reduce sugar content, leave out the maple syrup and substitute the banana with a frozen alternative with less sugar, like cauliflower.
For a vegan smoothie, use a plant-based milk instead of dairy.
For a completely gluten-free smoothie, use oats that are certified gluten-free. Oats do not have gluten, but can be cross-contaminated. Looking for the gluten-free symbol ensures they are not cross-contaminated.

How to Make Banana Oatmeal Smoothie Freezer Packs

Smoothie freezer packs are simple to put together and really remove any barrier to making a smoothie.

I love that you do all the measuring at once in advance, and then when you’re ready to blend up a smoothie, all you have to do is add the liquid components.

A banana oatmeal smoothie freezer pack, which is a baggie that contains pre-measured ingredients, including, oats and dry ingredients, frozen banana chunks, and a frozen scoop of peanut butter.

To make a banana oatmeal smoothie freezer pack: (1) Cut banana into one-inch chunks and place them and peanut butter on a tray in freezer for 30 minutes. (2) Measure oats, cinnamon and salt in a snack bag. (3) On a sandwich bag, write, “add 1/2-3/4 cup milk & 1 T maple syrup. (4) Place snack bag of oats and frozen banana and peanut butter into sandwich bag. Press out air and seal. (5) Place in freezer up to 2 months.

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