Cook once, eat all week: The simple kitchen trend saving Australians time and money

There was a time when “leftovers” carried a faint whiff of disappointment.

A sort of culinary afterthought. Yesterday’s dinner, reheated with diminished expectations and, occasionally, regret.

Not anymore.

Leftovers have had a rebrand – and frankly, it’s about time. These days, they’re called batch cooking. Which sounds less like defeat and more like strategy. Because that’s exactly what it is.

According to CHOICE, more Australians are embracing meal planning as a way to cut costs, reduce waste and avoid the nightly existential question: what on earth is for dinner?

Home economist Clare Hughes puts it plainly: “Cooking in bulk saves money, reduces food waste and makes weeknight meals much easier.”

And easier, at this stage of life, is not something to be sniffed at.

The quiet genius of batch cooking

The idea is beautifully simple.

You cook once – properly, generously, with intent – and then you stretch that effort across several meals. Not by eating the exact same thing five nights in a row (this is not prison), but by reinventing it.

A roast becomes sandwiches. Then soup. Then, if you’re particularly organised, something vaguely French involving mustard and smugness.

It’s less about repetition, more about evolution.

And the real joy? Opening the fridge midweek and realising dinner is already handled. No decisions. No panic. Just quiet, edible competence.

Slow-roasted chicken with lemon and herbs

(Dinner, then sandwiches, then soup — the holy trinity)

Ingredients

1 whole chicken
1 lemon, halved
4 garlic cloves
Fresh thyme or rosemary
2 tbsp olive oil
Salt and pepper
1 onion, quartered

Method

Preheat oven to 180°C.
Stuff the chicken with lemon, garlic and herbs.
Rub with oil, salt and pepper.
Place onion underneath and roast for 1 hour 20 minutes (or until golden and cooked through).
Rest before carving.

How to stretch it

Day 1: Roast chicken with vegetables
Day 2: Chicken sandwiches with mustard mayo
Day 3: Chicken soup using the carcass (add stock, veg, noodles if you’re feeling jaunty)

Rich pork mince ragu

(The sort of thing that improves with age — like you)

Ingredients

500g pork mince
1 onion, finely chopped
2 garlic cloves
1 carrot, grated
1 celery stick, chopped
1 tin crushed tomatoes
2 tbsp tomato paste
1/2 cup red wine (optional but recommended)
Olive oil, salt, pepper

Method

Heat oil in a large pan. Cook onion, garlic, carrot and celery until soft.
Add pork mince and brown well.
Stir in tomato paste, wine and tomatoes.
Simmer gently for 30–40 minutes until rich and thick.

How to stretch it

Day 1: Serve with pasta
Day 2: Spoon into baked potatoes or over polenta
Day 3: Turn into a lasagne or freeze for later (future you will be delighted)

Hearty vegetarian lentil and vegetable stew

(Cheap, cheerful and suspiciously good for you)

Ingredients

1 cup dried lentils (or 2 cups canned, drained)
1 onion, chopped
2 carrots, chopped
1 zucchini, chopped
1 tin diced tomatoes
3 cups vegetable stock
1 tsp cumin
1 tsp paprika
Olive oil, salt, pepper

Method

Heat oil, cook onion and vegetables until softened.
Add spices and stir until fragrant.
Add lentils, tomatoes and stock.
Simmer for 30–40 minutes until thick and hearty.

How to stretch it

Day 1: Serve as a stew with crusty bread
Day 2: Add to rice or quinoa for a bowl meal
Day 3: Blend slightly and serve as soup

Why it works (beyond saving money)

Batch cooking isn’t just economical – though it certainly helps when grocery bills are behaving like luxury items.

It also reduces waste, simplifies decision-making, and – crucially – gives you back time. Time you might otherwise spend staring into the fridge, hoping inspiration strikes.

And for many Australians, particularly those cooking for one or two, it offers something else: efficiency without compromise.

Batch cooking isn’t glamorous. It won’t win you a television show or a Michelin star.

But it will feed you well, save you money, and make your week noticeably easier.

And on a Wednesday evening, when dinner is already sorted and the kettle’s just boiled, that feels like a quiet kind of brilliance.