Easy Banana Smoothie Recipe

Easy banana smoothie recipe

A banana smoothie is the most forgiving, least fussy smoothie you can make. No specialist ingredients, no preparation beyond peeling the banana, and the result is naturally creamy and sweet without any additions. It takes five minutes and produces something genuinely good.

Here is the recipe, followed by some notes on why certain choices make it better.

Recipe card

Name: Classic banana smoothie
Prep time: 5 minutes
Total time: 5 minutes
Servings: 1

Ingredients

1 large ripe banana (fresh or frozen), approximately 120–130g
200ml oat milk (or any plant milk) [three-quarters of a cup plus 1 tablespoon]
1 tablespoon peanut butter (optional)
half a teaspoon vanilla extract (optional)
Handful of ice (if using fresh banana; skip if using frozen)

Method

Peel and roughly chop the banana. If using a frozen banana, remove it from the freezer five minutes beforehand — no need for ice.
Add the banana, oat milk, and any optional ingredients to your blender.
Blend for 30–45 seconds until completely smooth and creamy.
Taste and adjust — add a drizzle of honey or date syrup if you would like it sweeter.
Pour into a glass and serve immediately.

Nutrition (approximate)

	Without peanut butter	With peanut butter
Calories	~200 kcal	~280 kcal
Carbohydrates	43g	45g
Natural sugars	32g	32g
Protein	3g	8g
Fat	1g	7g
Fibre	3g	4g

Why frozen banana is better

This is one of those small discoveries that makes a disproportionate difference. A frozen banana produces a smoothie that is genuinely creamier — almost ice-cream-like in texture — and cold enough that you do not need ice. Ice dilutes the flavour as it melts; a frozen banana does not.

The practical implication: peel and roughly chop any bananas that are looking very ripe and overripe, lay the pieces on a small tray, freeze until solid (about two hours), then transfer to a sealed bag or container. You now have perfect smoothie bananas ready to go at any time, and you have also rescued fruit that might otherwise have gone to waste.

The riper, the better

For smoothies, a banana that is fully yellow with brown spots is ideal. The more spots, the sweeter and softer the banana — which means it blends more easily and tastes better without any added sweetener. An underripe banana (greenish, firm) will blend, but the flavour is starchy and rather bland by comparison.

If you only have underripe bananas, a very small amount of date syrup or maple syrup can compensate for the missing sweetness. But generally, patience until the banana is properly ripe is the simplest solution.

Honest note on sugar

One large banana contains around 14g of natural sugar. A banana smoothie with oat milk will have roughly 32g of natural sugars in total. That is not a small number, but it comes alongside fibre (which slows absorption), potassium, B vitamins, and a satisfying, filling drink. Natural sugar in context is different from added sugar — but it is worth knowing the number rather than ignoring it. More on this in our post on whether smoothies are healthy.

Variations

Chocolate banana smoothie
Add 1 tablespoon of cocoa powder or raw cacao powder. Blends smoothly with the banana and creates something that tastes far closer to dessert than a health drink — which we consider a success.

Protein banana smoothie
Add 1 scoop of vanilla protein powder. This brings the protein content up to approximately 23–27g and makes the smoothie a proper post-workout or meal-replacement option. The vanilla protein enhances the natural flavour rather than fighting it.

Berry banana smoothie
Add a handful of frozen strawberries or raspberries. The berries add brightness and slight tartness that cuts through the banana’s sweetness. The colour shifts to a lovely pink-purple. This is also a way to reduce the natural sugar content slightly — berries are considerably lower in sugar than banana alone.

Peanut butter banana smoothie
This is the version with the peanut butter already included in the base recipe. If you want to lean into it further, two tablespoons rather than one produces something thick, rich, and very filling. Some people add oats too, which brings it even closer to a meal.

Banana smoothies at Framberry

Our banana smoothie is on the main menu and works as a base for several of our protein and booster options. If you would like something with a similar tropical richness, our mango smoothie is the obvious next stop. Alternatively, have a look at our guide to the healthiest smoothie formula to build exactly what you want.

Framberry opens in London in 2027. Join the list to be among the first through the door.

Frequently asked questions

Q: Can I make a banana smoothie without milk?
A: Yes — use water instead. The flavour will be less rich and creamy, but perfectly acceptable. A very ripe frozen banana has enough body to produce a drinkable smoothie with just water.

Q: Can I use overripe bananas?
A: Overripe bananas — those with almost entirely black skins — are actually the best choice for smoothies. They are very sweet, very soft, and blend effortlessly. They would be past their prime for eating on their own, but in a smoothie they are ideal.

Q: How do I freeze bananas for smoothies?
A: Peel, slice into rounds or break into chunks, spread on a tray, and freeze for about two hours. Once solid, transfer to a sealed bag or container. They keep in the freezer for up to three months.

Q: Is a banana smoothie good for you?
A: It contains potassium, B vitamins, fibre, and natural carbohydrates for energy. Whether it is a good fit depends on the rest of your diet and what you are looking for from it. A banana smoothie with oat milk is broadly a nutritious, filling snack or light meal. Adding protein powder and peanut butter makes it more substantial and better balanced across macronutrients.

Q: Can children have banana smoothies?
A: Yes, banana smoothies are popular with children and are a genuinely nutritious option. Adjust the portion size, use plant milk as a base, and skip any additions like protein powder or nut butters for very young children (both for appropriate sizing and due to nut allergy considerations).

Recipe schema data

Recipe name: Classic banana smoothie
Prep time: PT5M
Total time: PT5M
Servings: 1
Recipe category: Drink / Smoothie
Keywords: banana smoothie, banana oat milk smoothie, healthy banana smoothie

Ingredients:
– 1 large ripe banana (fresh or frozen), approximately 120–130g
– 200ml oat milk [three-quarters of a cup plus 1 tablespoon]
– 1 tablespoon peanut butter (optional)
– half a teaspoon vanilla extract (optional)
– Handful of ice (if using fresh banana only)

Instructions:
1. Peel and roughly chop banana. If using frozen banana, remove from freezer 5 minutes before blending.
2. Add banana, oat milk, and any optional ingredients to blender.
3. Blend for 30–45 seconds until smooth and creamy.
4. Taste and adjust sweetness. Add honey or date syrup if desired.
5. Pour into a glass and serve immediately.

Try our banana smoothie on the full Framberry menu — available plain or with your choice of protein and booster. We are opening in London in 2027. Join the list to find out when.