Overnight Oats with Fruit and Nuts
A simple, no-cook breakfast made with oats, milk, and your choice of fruit and nuts
Allergens: contains cereals containing gluten, milk, tree nuts. Brands differ, so always check the labels on what you buy.
Per serving (approx.): 47g carbs · 13g sugars · 6g fibre. Estimates for carb counting, not medical advice. If you have diabetes, follow your GP or dietitian's advice.
Not every ingredient has a checked price at Aldi, Lidl, Sainsbury's, Morrisons, Iceland, so they aren't compared here.
Ingredients and prices
Swipe the table to see every supermarket.
| Ingredient | Asda | Tesco |
|---|---|---|
| Porridge oatsuse 200g | £1.66450g · £0.37 per 100g | £1.45270g · £0.54 per 100g |
| Milk (semi-skimmed)use 500ml | £1.201L · £0.11 per 100ml | £0.85568ml · £0.15 per 100ml |
| Bananasnot compared | – | £0.75 |
| Walnutsuse 50g | £1.74180g · £0.97 per 100g | £2.25200g · £1.13 per 100g |
| Basket total (full packs) | £4.60 | £4.55 |
| Cost of what this recipe uses | £1.77 | £2.40 |
| Per serving | £0.44 | £0.60 |
Not compared (a price wasn't found at every shop, so it isn't in the totals): Bananas.
From your cupboard
Not in the prices above. Check you have these before you start.
Prices checked on 3 October 2026 from each supermarket's own listing or a price-comparison site. Each shop's unit price (or pack size) is shown under its price, and "cost of what this recipe uses" compares like with like (tap a price to see its source). Cheapest in each row is ticked. Prices, offers and pack sizes change; loyalty-card prices are not included unless stated.
Method
The method is written for 4. For a different number, use the amounts in the table above.
- Weigh 200g porridge oats into a large mixing bowl or 1-litre jar. Pour in 500ml semi-skimmed milk, stirring until all oats are submerged. The mixture will look thin but will thicken as it soaks.
- Peel and mash 1 banana with a fork until smooth, then stir it into the oat mixture. The banana adds natural sweetness and a creamy texture. Taste and add a pinch of salt if desired.
- Roughly chop 50g walnuts on a board using a sharp knife, aiming for pieces about 1cm big. Stir half of the nuts into the mixture now, reserving the rest for topping.
- For meal prep, spoon the mixture into 4 individual jars or containers before chilling, so they’re ready to grab and go. Otherwise, cover the bowl tightly with cling film or a lid.
- Place in the fridge for at least 4 hours, or ideally overnight. The oats will absorb the liquid and become soft and pudding-like.
- In the morning, give the oats a good stir – they should be thick and creamy with no dry oats visible. If too thick, loosen with a splash more milk. Taste and add honey or maple syrup if you like.
- Peel and slice the remaining banana into 0.5cm rounds. Divide the oats evenly among 4 serving bowls. Top each with banana slices and the reserved walnuts.
- Drizzle with 1 tsp honey per bowl if using, and sprinkle with a pinch of ground cinnamon. Serve immediately, or keep covered in the fridge for up to 2 days.
Tips
- Swap walnuts for cheaper peanuts, sunflower seeds or omit nuts entirely to reduce cost.
- Make a double batch and portion into 4 jars; they keep in the fridge for up to 48 hours – perfect for grab-and-go breakfasts all week.
- Store in the fridge within 2 hours of making and eat within 2 days. If you prefer warm oats, microwave a portion for 60–90 seconds until steaming hot, but only reheat once.
Nothing wasted: your leftover ingredients
Supermarkets sell set pack sizes, so you'll have some ingredients left. Here's how to keep them, and other recipes here that use them up.
- Porridge oats · about 800g left
Dry stores keep for months sealed in the cupboard, so nothing goes to waste. Use it in: Chocolate Rocky Road Slice, Flapjacks, Apple Crumble. - Milk (semi-skimmed) · about 500ml left
Keep in the fridge and use by the date on the pack; milk can also be frozen. Use it in: Rich Chocolate Mousse, Beef and Ale Pie, Banana muffins. - Walnuts · about 50g left
Check the label: most raw ingredients can be frozen before their use-by date, and cupboard staples keep for months. Use it in: Golden Syrup Flapjack Bars, Chocolate Rocky Road Slice.
Storing leftovers
Cool leftovers and put them in the fridge or freezer within 1–2 hours. Eat fridge leftovers within 2 days, or freeze them. Defrost in the fridge and reheat only once, until steaming hot all the way through (Food Standards Agency guidance).