Why You’ll Love This Recipe

I love this smoothie because the combination of banana and oats creates a naturally creamy, substantial texture. A ripe banana provides plenty of sweetness, while the oats give the smoothie a mild, comforting flavor.

I also like how easily I can customize it. I can add peanut butter, berries, protein powder, chia seeds, or different spices. When I use a frozen banana, I get an especially thick and cold smoothie without needing much ice.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

1 large ripe banana, preferably frozen
1/2 cup old-fashioned rolled oats
1 cup milk or plant-based milk
1/2 cup plain or vanilla Greek yogurt
1/2 teaspoon ground cinnamon
1/2 teaspoon vanilla extract
1 tablespoon honey or maple syrup, optional
1 tablespoon chia seeds or ground flaxseed, optional
1/2 cup ice cubes, optional

Directions

I add the rolled oats to my blender and blend them briefly on their own until they have a finer, flour-like texture. I find this helps create a smoother finished drink.
I pour in the milk, then add the Greek yogurt, banana, cinnamon, and vanilla extract.
If I’m using chia seeds or ground flaxseed, I add them at this stage.
I blend everything on high until the oats and banana are completely incorporated and the smoothie becomes thick and creamy.
I taste the smoothie before adding sweetener. When my banana is very ripe, I often find that I don’t need any additional sweetness.
If I want it sweeter, I add a little honey or maple syrup and blend again.
I check the consistency. If my smoothie is too thick, I add another splash of milk. If I want it colder and thicker, I add a few ice cubes and blend again.
I pour the smoothie into a glass and serve it immediately.

Servings and Timing

I get approximately 1 large or 2 smaller servings from this recipe.

Prep time: 5 minutes
Blending time: 2 minutes
Total time: About 7 minutes
Servings: 1 large or 2 small smoothies

Variations

Peanut Butter Banana Oatmeal Smoothie

I add 1–2 tablespoons of peanut butter for a rich, nutty flavor. I especially like how peanut butter pairs with banana, cinnamon, and oats.

Chocolate Banana Oatmeal Smoothie

I add 1 tablespoon of unsweetened cocoa powder before blending. If I want a sweeter chocolate flavor, I add a small amount of honey or maple syrup as well.

Banana Berry Oatmeal Smoothie

I add about 1 cup of frozen strawberries, blueberries, or mixed berries. I may add a little extra milk because the additional frozen fruit makes my smoothie thicker.

Banana Oatmeal Protein Smoothie

I add a scoop of vanilla or unflavored protein powder. Since protein powder can thicken the smoothie, I gradually add extra milk until I reach the consistency I prefer.

Dairy-Free Banana Oatmeal Smoothie

I use oat, almond, soy, or coconut milk and replace the Greek yogurt with a dairy-free yogurt. I can also leave the yogurt out and use a little less liquid for a thick texture.

Storage/Reheating

I prefer drinking my Banana Oatmeal Smoothie immediately after blending because the oats continue absorbing liquid as the smoothie sits. Freshly blended gives me the creamiest consistency.

If I have leftovers, I store them in a tightly sealed container in the refrigerator for up to 24 hours. The smoothie usually becomes thicker during storage, so I stir in a splash of milk before drinking it.

I can also prepare smoothie packs ahead of time by freezing sliced banana and keeping the measured dry ingredients ready separately. This allows me to blend a fresh smoothie quickly in the morning.

For longer storage, I can freeze the finished smoothie in an ice cube tray and blend the frozen cubes later with a little milk.

I don’t reheat this smoothie. I serve it cold or at a cool room temperature, depending on my preference.

FAQs

Do I need to cook the oats before adding them to a smoothie?

No. I use uncooked old-fashioned rolled oats directly in my smoothie. I like blending them briefly before adding the other ingredients because this creates a finer texture.

Can I make a Banana Oatmeal Smoothie the night before?

Yes. I can prepare it the night before and refrigerate it in a tightly sealed container. Because the oats absorb liquid, I expect the smoothie to become thicker overnight, so I add a little milk and shake or blend it again before serving.

Can I make a Banana Oatmeal Smoothie without yogurt?

Yes. I can leave out the Greek yogurt and use a little less milk. A frozen banana already gives me plenty of creaminess, and I can also add nut butter or chia seeds for a thicker texture.

What type of oats should I use in a Banana Oatmeal Smoothie?

I prefer old-fashioned rolled oats because they blend easily and provide a pleasantly creamy texture. Quick oats also work, but I generally avoid steel-cut oats because they remain much firmer and can produce a gritty texture when used raw.

How do I make my Banana Oatmeal Smoothie thicker?

I use a frozen banana and slightly reduce the amount of milk. I can also add extra Greek yogurt, chia seeds, nut butter, additional oats, or a few ice cubes. I keep in mind that oats naturally thicken the smoothie as it sits.

Conclusion

This Banana Oatmeal Smoothie is one of my favorite simple options when I want a creamy drink with the comforting flavors of banana, oats, cinnamon, and vanilla. I love that I can prepare it in just a few minutes with basic ingredients.

Banana Oatmeal Smoothie

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This Banana Oatmeal Smoothie blends ripe banana and rolled oats with Greek yogurt, milk, cinnamon, and vanilla for a thick and creamy drink. It is a quick and satisfying choice for breakfast or a snack.

Author: Laura
Prep Time: 5 minutes
Cook Time: 2 minutes
Total Time: 7 minutes
Yield: 1 large or 2 small smoothies
Category: Beverage
Method: Blending
Cuisine: American
Diet: Vegetarian

Instructions

Add the rolled oats to a blender and blend briefly until they have a finer, flour-like texture.
Pour in the milk, then add the Greek yogurt, banana, cinnamon, and vanilla extract.
Add the chia seeds or ground flaxseed if using.
Blend on high until the oats and banana are completely incorporated and the smoothie is thick and creamy.
Taste the smoothie before adding sweetener. If additional sweetness is desired, add honey or maple syrup.
Blend again until the sweetener is fully incorporated.
Check the consistency. Add a splash of milk if the smoothie is too thick, or add ice cubes and blend again for a colder, thicker smoothie.
Pour into a glass and serve immediately.

Notes

Old-fashioned rolled oats work well without cooking. Quick oats can also be used, but raw steel-cut oats may produce a gritty texture.
For a peanut butter variation, add 1–2 tablespoons peanut butter before blending.
For a chocolate version, add 1 tablespoon unsweetened cocoa powder and sweeten to taste.
Add about 1 cup frozen strawberries, blueberries, or mixed berries for a banana berry oatmeal smoothie, adding extra milk if needed.
For extra protein, add a scoop of vanilla or unflavored protein powder and adjust the milk to reach the desired consistency.
For a dairy-free version, use plant-based milk and dairy-free yogurt, or omit the yogurt and reduce the liquid slightly.
A frozen banana creates a thicker, colder smoothie without requiring as much ice.
The smoothie is best served immediately because the oats continue to absorb liquid and thicken as they sit.
Leftovers can be refrigerated in a tightly sealed container for up to 24 hours. Stir in additional milk and shake or blend before serving.
The finished smoothie can be frozen in ice cube trays and later reblended with a little milk.

Nutrition

Serving Size: 1/2 recipe
Calories: 250 kcal
Sugar: 18 g
Sodium: 85 mg
Fat: 5 g
Saturated Fat: 2 g
Unsaturated Fat: 3 g
Trans Fat: 0 g
Carbohydrates: 43 g
Fiber: 5 g
Protein: 11 g
Cholesterol: 10 mg