Healthy Smoothies for Kids: 6 Low-Sugar Recipes

Smoothies look like the perfect parent hack. Bright colours, fruit in a cup, kids drink them without a fight. But they are not quite the health food they seem, and a big glass of blended fruit can carry a lot of sugar. The good news is that with a few tweaks, healthy smoothies for kids can be a useful part of breakfast or a post-park snack. This guide covers what the NHS says, how to keep sugar down, how to sneak veg in, and six balanced recipes I suggest to parents in my Archway classes.

What the NHS says about smoothies

This is the bit most parents do not know. When fruit is blended, the sugars are released from inside the fruit’s cells and become “free sugars”, the type we are told to cut down on. That is why the NHS treats smoothies differently from whole fruit:

• Fruit juice and smoothies combined should be no more than 150ml a day, about one small glass.
• They count as a maximum of one of your 5 A Day, however much you drink.
• Have them with a meal, not sipped throughout the day, to reduce the risk of tooth decay.

You can read this on the NHS 5 A Day: what counts page. The NHS Healthier Families sugar page also gives daily limits for free sugars: 19g for children aged 4 to 6, 24g for 7 to 10, and 30g from age 11.

So the goal is not a giant smoothie every day. It is a small, balanced one that does more than deliver sugar.

How to make healthy smoothies for kids: the formula

I use a simple four-part formula. It keeps sugar lower and makes the smoothie more filling:

1. Protein or fat base (about half the cup): milk, plain yoghurt or a spoon of nut butter if there are no allergies. This slows down how fast the sugar hits.
2. One small portion of fruit: half a banana or a small handful of berries. Frozen fruit is cheaper and makes it thick and cold without ice.
3. A hidden veg: a small handful of spinach, a few chunks of frozen cauliflower, some cucumber or cooked and cooled butternut squash.
4. A fibre boost: a spoon of porridge oats or ground flaxseed.

Skip honey, syrups and juice as a base. The fruit is sweet enough.

6 balanced smoothie ideas

Each makes two small kid-sized glasses (around 150ml each). Blend until completely smooth so there are no green bits to complain about.

1. The Hulk

150ml milk, half a banana, a handful of spinach, a spoon of oats. Spinach has a very mild taste when blended with banana. Calling it “Hulk juice” helps.

2. Berry blast

100ml milk, 3 tablespoons plain yoghurt, a handful of frozen mixed berries, a few chunks of frozen cauliflower. The berries hide the colour and the cauliflower makes it creamy.

3. Peanut butter and banana

150ml milk, half a frozen banana, 1 teaspoon peanut butter, a spoon of oats. Good after football or a run around the park. Check for nut allergies, especially if friends are over.

4. Orange sunshine

100ml milk, 2 tablespoons yoghurt, a few chunks of frozen mango, 2 tablespoons cooked and cooled butternut squash or carrot. The squash adds colour and sweetness.

5. Chocolate (yes, really)

150ml milk, half a banana, 1 teaspoon unsweetened cocoa powder, a handful of spinach. The cocoa hides the green completely.

6. Cucumber cooler

100ml milk or yoghurt, a chunk of cucumber, a few frozen pineapple pieces, a couple of mint leaves. Refreshing on hot days.

Tips to keep smoothies tooth-friendly and filling

• Serve with food. A smoothie alongside toast or eggs at breakfast is better than one on its own between meals.
• Keep the glass small. Use little cups rather than a pint glass. Kids feel the “treat” without the sugar load.
• Use a straw or drink it in one go. Sipping for an hour keeps sugar on teeth for longer.
• Follow with water. A glass of water after rinses the mouth.
• Do not swap whole fruit for smoothies. Whole fruit has more fibre and is more filling. Keep fruit bowls topped up.
• Get kids involved. Let them pick the fruit and press the button. Children are more likely to try something they helped make.

For more on hitting fruit and veg targets in other ways, read my post on 5 a day for kids. If you have a child who refuses anything green, my guide to fussy eaters may help, and healthy snacks for busy parents has ideas for you too.

What about smoothies for parents?

The same formula works for adults, just with a bigger protein portion. A glass of milk blended with Greek yoghurt, berries and oats is a decent post-workout option if you train in the morning and have no time to sit down. Just remember the same 150ml juice and smoothie guidance applies to grown-ups too, so I would treat it as part of breakfast rather than an extra drink on top.

In my classes I see that the parents who manage their energy best are the ones who keep food simple and regular. If you are running on empty by 3pm, try the SYP Recharge energy and focus class.

FAQs

Are smoothies healthy for kids?

They can be, in small amounts. The NHS suggests no more than 150ml of juice and smoothies combined a day, with a meal. Adding milk, yoghurt, veg and oats makes them more balanced than fruit alone.

Do smoothies count as one of my child’s 5 A Day?

Yes, but only as one portion a day, no matter how many you have or how much fruit is in them.

Can I give my child a smoothie every day?

A small one with breakfast is fine for most children. Keep it to around 150ml, serve it with food, and make sure they are still eating whole fruit and veg.

How do I hide vegetables in a smoothie?

Spinach, frozen cauliflower, cucumber and cooked squash or carrot are the easiest. Blend them with banana, berries or cocoa so the colour and taste are masked.

Book your first class

When the kids are sorted, you deserve some time too. SYP Bootcamp runs 45-minute small-group classes in Archway N19, max 10 people, £15 a class, indoors in a church hall, with easier and harder options for everything. Book your £15 class here or call or WhatsApp me on 07301 512215. Mums who prefer one-to-one support can read about personal training for women at SYP Fitness.

About the author

Artem Olekhnovych is a personal trainer in Archway and the founder of SYP Fitness and SYP Bootcamp. He has coached clients in Archway, Highgate and across North London for over 10 years, and runs small-group bootcamp classes for busy mums and dads. Read reviews from his 1-1 clients.