Overnight Weetbix is about the laziest good breakfast there is. You crumble 2 Weet-Bix into a jar, splash some milk on, spread thick yoghurt over the top and go to bed. In the morning the bottom’s gone soft, almost like cake, and the yoghurt has set up a bit like a light cheesecake. Five minutes at night. Nothing in the morning.
Weet-Bix in a jar didn’t sound exciting to me either, if I’m being real. But it’s become a Sunday night thing in a lot of houses for a reason. Got a box of Weet-Bix and a tub of Greek yoghurt? Make one tonight and see. Future you, at 7am, rushing, will be very happy about it.
Overnight Weetbix at a Glance
- Hands-on: 5 minutes, tops
- Fridge: 4 hours minimum, overnight is better
- Makes: 1 jar (just multiply it)
- Difficulty: easier than toast, seriously
- You need: Weet-Bix, milk, Greek yoghurt, honey, some fruit
- Make ahead: yep, up to 2 days
Jump to: Why it works · Ingredients and swaps · Step by step · Milk chart · Flavours · Why it’s trending · Weet-Bix vs Weetabix · Mistakes · Storage · Is it healthy? · FAQ
Why Overnight Weetbix Works (and Isn’t Just Soggy Cereal)
Here’s where people go wrong. Soggy Weet-Bix in a bowl is mush because it’s drowning. This uses barely any milk, just enough to soak in. So the flakes swell up, glue themselves together and turn into this soft layer you can actually cut with a spoon. It holds its shape. Weird, but good.
And the yoghurt isn’t just there to look nice. Thick Greek stuff basically acts like a lid on top, so the base under it stays damp but never turns into soup. Add a bit of honey and a drop of vanilla and suddenly it tastes like dessert, even though it’s mostly wholegrain wheat and yoghurt.
Weet-Bix are about 97% wholegrain wheat, going by the official Weet-Bix product page, and 2 biscuits come to 33 g. That’s why it’s 2 per jar. In a normal 300 ml jar you end up with a base around 2 cm deep, which is about right.
Overnight Weetbix Ingredients (and Easy Swaps)
Five things for the basic one. Everything else is just what you put on top.
- Weet-Bix: 2 biscuits (33 g). Plain original is best. UK Weetabix works too.
- Milk: 1/3 cup (80 ml) of whatever’s already in your fridge.
- Greek yoghurt: 1/2 cup (130 g), and I mean the properly thick tub (plain, or vanilla if you’ve got it).
- Honey or maple: a teaspoon or two.
- Vanilla: a 1/4 teaspoon splash. Skip if your yoghurt has it.
- On top: about 1/2 cup (75 g) of berries or mango, or banana in the morning.
Run out of something? This is what happens when you swap it.
| Ingredient | Swap | What changes |
|---|---|---|
| Greek yoghurt | Regular yoghurt | Runnier top; stir in 1 tsp chia seeds to thicken it |
| Greek yoghurt | Half light cream cheese, half yoghurt | Thicker, more like cheesecake |
| Dairy milk | Almond, oat or soy | Works the same; oat is a touch sweeter |
| Honey | Maple or a mashed ripe banana | Maple’s milder; banana sweetens it naturally |
| Weet-Bix | Weet-Bix Gluten Free (sorghum) | Bit crumblier; same method |
| Weet-Bix | 1/2 cup rolled oats | That’s classic overnight oats, chewier and creamier |
Quick note on the gluten-free one. There’s a Weet-Bix Gluten Free from Sanitarium that’s made from sorghum, and heads up, it soaks milk up quicker. Start with 1/4 cup (60 ml) and only add more if it’s looking dry.
What You Need
- A jar or container with a lid, 300 to 400 ml (an old jam jar is perfect)
- A fork, or the back of a spoon, for crushing and pressing
- A small bowl to mix the yoghurt in
Go for wide jars over tall skinny ones, you can actually get a spoon to the bottom. And if you’re doing a few for the week, matching containers make the fridge look way more organised than it is.
How to Make Overnight Weetbix, Step by Step
First go? Don’t overthink it. If you’ve pressed the base down and it still looks kinda dry? Totally fine. It keeps softening all night.
- Crush. Break the 2 Weet-Bix into the jar and squash them up with a fork. Leave a few chunky bits, they’re nice.
- Milk. Pour the 1/3 cup (80 ml) over the crumbs, give it 30 seconds, then push it all down flat and firm.
- Yoghurt. Mix your yoghurt, honey and vanilla in a little bowl till there are no streaks.
- Layer. Dollop that onto the base and push it right out to the edges (think icing a cake) so the bottom’s sealed in.
- Fruit. Berries or mango on top now, or leave it till morning if you like it fresh.
- Fridge. Lid on, fridge for at least 4 hours, overnight if you can. Eat it cold from the jar.
That’s it, really. The only thing you actually have to decide is how much milk, and most recipes kind of leave you guessing on that.
Overnight Weetbix Recipe
Overnight Weetbix
Ingredients
- 2 Weet-Bix (33 g), original or gluten free
- 1/3 cup milk (80 ml), dairy or plant-based
- 1/2 cup thick Greek yoghurt (130 g), plain or vanilla
- 1 tsp honey or maple syrup plus more to taste
- 1/4 tsp vanilla extract skip if using vanilla yoghurt
- 1/2 cup diced mango or mixed berries (75 g)
Method
- Break 2 Weet-Bix into a 300-400 ml jar and crush them roughly with a fork, leaving a few bigger pieces for texture.
- Pour 1/3 cup (80 ml) milk evenly over the crumbs, wait 30 seconds, then press down firmly into a flat, even base.
- In a small bowl, stir 1/2 cup (130 g) Greek yoghurt with the honey and vanilla until smooth and creamy.
- Spoon the yoghurt over the Weet-Bix base and spread it right to the edges of the jar so it seals the base.
- Top with diced mango or berries. Add banana in the morning instead, as it turns brown overnight.
- Cover and refrigerate for at least 4 hours or overnight (6-8 hours), until the base is soft and cake-like. Eat cold within 2 days.
Nutrition
Notes
- Milk: 1/4 cup (60 ml) gives a firmer base, 1/2 cup (125 ml) a softer one that is ready in about 2 hours.
- UK Weetabix: use about 90 ml milk for 2 biscuits.
- Gluten free: use Weet-Bix Gluten Free and start with 60 ml milk.
- Keeps up to 2 days in a sealed jar in the fridge at 5°C or below. Do not freeze.
- Nutrition is an estimate based on full-cream milk, plain Greek yoghurt and mango.
Private Notes
Tried this recipe?
Let us know how it was!How Much Milk? The Crunch-to-Cake Chart
Milk is the whole game. Same 2 biscuits, same jar, a night in the fridge, here’s roughly what you get.
| Milk for 2 Weet-Bix | Texture next morning | Best for |
|---|---|---|
| 1/4 cup (60 ml) | Firm base, a little crunch at the edges | People who hate anything mushy |
| 1/3 cup (80 ml) | Soft, cake-like, holds its shape | The classic (my pick) |
| 1/2 cup (125 ml) | Very soft, almost pudding-like | Kids, or a quick 2-hour soak |
| 3/4 cup (185 ml) or more | Wet and sloppy | Nothing. Skip it. |
In a rush? With 1/2 cup (125 ml) of milk it’s soft enough after about 2 hours. Not quite as good as a full night, but close enough on a Monday.
6 Overnight Weetbix Flavours Worth Waking Up For
Once the base clicks, this is the fun bit. Every one of these uses the same 2 Weet-Bix and 1/3 cup (80 ml) milk. Only the top changes.
| Flavour | Mix into the yoghurt | Top with |
|---|---|---|
| Mango cream | 1 tsp honey, a little lime zest | 1/2 cup diced mango |
| Biscoff | 2 tsp Biscoff spread, warmed | 1 crushed Biscoff biscuit |
| Milo | 1 tbsp Milo powder | A sprinkle of Milo on top |
| Peanut butter choc | 1 tbsp peanut butter | 1 tbsp dark choc chips |
| Berry cheesecake | 2 tbsp light cream cheese, 1 tsp honey | Mixed berries |
| Banoffee | 1 tsp caramel sauce | Sliced banana, pinch of cinnamon |
On a warm spring morning I’d go mango every time. Aussie mangoes are only just coming in, and a ripe one on top is pretty much summer in a jar.
Want more protein in it? Stir a tablespoon (about 15 g) of vanilla protein powder through the yoghurt, plus an extra splash of milk, otherwise it gets too thick to spread.
Why Everyone’s Making Overnight Weetbix Right Now
If your feed’s full of these lately, you’re not imagining it. Google Trends has searches for “overnight weetbix recipe” climbing in Australia this October, right when it warms up and people ditch hot porridge for something cold.
It kind of started with the UK version. Back in 2022 the Weetabix Food Company said the #OvernightWeetabix hashtag had hit 20 million TikTok views, mostly tiramisu, banoffee and cheesecake ones.
Then this year it blew up again. In April 2026 the Boston Globe reported a TikTok of chocolate-dipped Weetabix passed 11 million views and left US shelves empty for a couple of months. Overnight versions got swept up in the same wave.
Bit of trivia too. Weet-Bix is a Sydney invention, with the trademark filed back in 1926 (it’s all in the Weet-Bix history on Wikipedia). A hundred-year-old Aussie brekky biscuit, going viral on TikTok. Love that for it.
Weet-Bix or Weetabix, Does It Matter?
Not really. Weet-Bix is the Aussie and Kiwi one, Weetabix is the British one, and while they’ve got the same backstory they’re totally separate brands today. Either way you’re getting a pressed wholegrain wheat biscuit that drinks milk the same.
The British ones weigh a bit more (2 biscuits is around 37.5 g), so they want about 90 ml of milk. If it still looks dry once pressed, add a tablespoon more. That’s the only tweak.
Common Overnight Weetbix Mistakes (and Easy Fixes)
- Way too much milk. The big one. Start at 1/3 cup (80 ml), you can’t get it back out once it’s in.
- Not pressing it down. Loose crumbs soak patchy and stay dry in spots. Squash it flat.
- Runny yoghurt. It leaks into the base and makes it soggy. Use Greek, or chuck in some chia.
- Banana on overnight. Goes brown and slimy by morning. Add it fresh.
- Not enough time. Under 2 hours the middle’s still hard. Give it 4.
Get those sorted and it’ll work every time.
How Long Does Overnight Weetbix Last in the Fridge?
Up to 2 days, sealed, in a fridge running at 5°C or colder. After that it’s still fine to eat if it’s stayed cold, but the base gets wetter and the fruit starts weeping. So for meal prep, I’d do 2 days at a time, not a whole week.
Don’t leave it sitting on the bench either. It’s dairy, so Food Standards Australia New Zealand’s 2-hour/4-hour rule applies. Under 2 hours between 5°C and 60°C, back in the fridge is fine. Between 2 and 4 hours, eat it. Over 4, bin it. Taking it to school or work? Pack an ice brick.
And don’t freeze it. The yoghurt goes grainy and the base turns watery when it thaws.
Is Overnight Weetbix Healthy?
It can be a pretty decent breakfast. Going by the nutrition panel on the pack, 2 Weet-Bix have 117 calories, 4.1 g protein, 4.3 g fibre and only 1 g of sugar. Throw in Greek yoghurt and fruit and the basic jar lands somewhere around 340 calories and 18 g protein. That’s a rough estimate, it depends on your milk and yoghurt.
Where it creeps up is the sweet toppings. Biscoff, Milo and caramel ones taste amazing, but they’re more a weekend thing. Everyday, stick with fruit and a teaspoon of honey. If it needs to keep you going till lunch, add a handful of nuts, kind of like this Greek yoghurt with berries and nuts.
Overnight Weetbix FAQ
How many Weet-Bix do you use for overnight Weetbix?
Two per jar, which is 33 g and one normal serve. You’ll get a base about 2 cm thick in a 300 ml jar. For a starving teenager, go 3 biscuits with 1/2 cup (125 ml) milk and a bit more yoghurt on top.
Can you make overnight Weetbix without yoghurt?
You can, yeah. Let the 2 biscuits soak in 1/2 cup (125 ml) of milk, squish half a banana through, and pop it in the fridge. You get something softer, closer to a pudding than a cheesecake. You lose the creamy top layer, but with berries and a bit of honey it’s still really good.
Can you eat overnight Weetbix warm?
Sure. Pull the fruit off, nuke it for 40 to 60 seconds, stir, and you’ve basically got soft porridge. The yoghurt can split a bit when it’s heated, so if you want it smooth, add it after.
How long should overnight Weetbix sit in the fridge?
Four hours at least, overnight (6 to 8 hours) if you can. With more milk, about 1/2 cup (125 ml), it’s soft enough in 2. Sealed up in the fridge it keeps for 2 days.
Is overnight Weetbix good for kids?
Most kids love it, it basically tastes like dessert to them. Use 1 or 2 biscuits with a little extra milk for a softer base and keep the honey light. Remember honey isn’t for babies under 12 months, and Weet-Bix has gluten in it.
Can you use protein yoghurt?
Yes, and the high-protein ones usually set even thicker. Some are pretty sour though, so taste the topping and add a teaspoon of honey or maple if it needs it. With a flavoured one you can leave the vanilla out.
My Last Tip: Make Two Jars, Not One
It’s honestly even better on day two, when the base has gone fully soft and everything’s settled. So make two tonight. Tomorrow-you gets a free breakfast too.
If you give it a go, leave a star rating on the recipe card and tell me in the comments which flavour you did, I’m always after new ideas. Pin it so it’s easy to find on Sunday night. And if there are Weet-Bix fans in your house, they’ll probably love these crunchy honey joys in the lunchbox too.
