Who this choice affects

Leftover reheaters short on space

If chilled leftovers are your main reason for buying, measure the usable worktop before weighing up extra programmes. The external dimensions published by Panasonic, Russell Hobbs and Samsung show why litre capacity alone cannot tell you how much worktop a microwave will occupy.

Casserole-dish fit checkers

If you use a particular casserole dish, check its base, handles and height against the turntable and cavity. A microwave that fits the worktop still needs enough room for your dish to rotate freely.

One-appliance kitchen consolidators

If you also want to grill, bake or air fry, a multifunction model may serve another cooking task. That is a separate decision from choosing a compact appliance solely to reheat leftovers.

What matters when buying

Concern What to check Who this matters to
Worktop fit Measure usable width and depth; compare external dimensions and the manual’s ventilation clearances. With a narrow worktop, I need the microwave to fit without blocking its vents; around 33% of consumers put worktop fit first.
Casserole-dish fit Compare the dish base, handles and height with the turntable and cavity; check that the cookware is microwave-safe. If I already have a casserole dish, I want to keep using it without its handles catching as it turns. Dish fit comes first for around 33% of consumers.
Controllable reheating Look for adjustable power and time controls, then follow the appliance instructions when reheating. For a portion of chicken casserole, I want to adjust the heating and check that it is steaming hot throughout; around 27% of consumers prioritise reheating control.
Other cooking modes Decide whether grill, convection or air-fry modes would replace another appliance you use. If one appliance could handle cooking tasks beyond leftovers, I may accept more functions than a solo microwave offers. Around 7% of consumers put appliance consolidation first.

Buying pitfalls

  • Assuming fewer litres means a smaller footprint

    Russell Hobbs lists its 17L RHM1731B at 452 × 355mm across the worktop, while Panasonic lists its 20L NN-ST22QBBPQ at 440 × 324mm. Capacity does not reliably indicate external size.

    Measure your available width and depth, then check the model’s external dimensions and installation clearances.

  • Checking the microwave but not the dish

    Your casserole dish may catch inside the cavity or fail to rotate freely even when the appliance fits its intended spot.

    Measure the dish at its widest point, including handles, as well as its base and height. Compare those measurements with the turntable and cavity, and use microwave-safe cookware.

  • Choosing extra modes for reheating alone

    A grill or combi adds cooking options, but those modes are not necessary just to reheat chicken casserole.

    Consider them if browning a topping or replacing another countertop appliance is a recurring need.

  • Overlooking electrical use and ventilation

    Safe cookware is only part of using a countertop microwave: blocked vents and unsuitable electrical arrangements also matter.

    Electrical Safety First advises checking for a UK three-pin fused plug, avoiding extension leads and keeping vents clear. Follow the appliance manual and do not use its top for storage.

Brands to consider

Panasonic

Panasonic lists compact solo and grill models alongside a larger multifunction option, so the relevant choice depends on whether you need reheating alone or other cooking modes.

  • Panasonic specifies a 20L capacity, 800W microwave power and 255mm turntable for the NN-ST22QBBPQ solo model.
  • Dish fit and installation clearances still need checking for the particular model; a grill or combi does not remove those requirements.

Russell Hobbs

The RHM1731B is a manual-control solo option for consumers who prefer dials for straightforward reheating.

  • Russell Hobbs specifies 17L capacity, 700W output, five power levels and a 24.5cm turntable for this model.
  • Its stated 452 × 355mm width and depth should be checked directly rather than assuming its 17L capacity means a smaller footprint than a 20L model.

Samsung

Samsung’s ME731K/XEU is a 20L solo microwave to consider if its stated dimensions suit your worktop and dish.

  • Samsung specifies external dimensions of 489 × 275 × 320mm for the ME731K/XEU.
  • Samsung describes its Triple Distribution System as supporting even cooking; that manufacturer claim does not establish how it compares when reheating your casserole.

Joybuy products

Related products coming soon.

Frequently asked questions

What microwave size will fit my casserole dish?

Choose by the dish and the available worktop space, not litre capacity alone. Measure the dish base, handles and height, then check that it fits the cavity and rotates freely; Panasonic specifies a 255mm turntable for the NN-ST22QBBPQ, while Russell Hobbs specifies a 24.5cm turntable for the RHM1731B.

Do I need a grill microwave to reheat chicken casserole?

No: a solo microwave covers the reheating task. Consider a grill model if you also want to brown a topping; Panasonic lists a 1000W quartz grill alongside the microwave function of its NN-K18JMMBPQ.

How should I reheat chicken casserole in a microwave?

Use microwave-safe cookware, stir where practical and make sure the casserole is steaming hot throughout before eating. Follow the appliance and recipe instructions for heating and standing time, adjusting for the portion; the Food Standards Agency identifies food being steaming hot and cooked all the way through as a relevant home food-safety practice.

What electrical checks matter for a countertop microwave?

Check that the appliance has a UK three-pin fused plug and that you can position it with clear ventilation. Electrical Safety First also advises buying from a reputable retailer, avoiding extension leads and not storing items on top of the microwave.

Will an air-fry combi save worktop space?

It may be useful if it replaces another appliance you use, but its own dimensions and installation clearances still need to fit your worktop. Panasonic lists microwave, grill, convection and air-fry modes and a 34cm turntable for its NN-CT56RBBPQ; those extra modes are not needed for reheating casserole alone.