Choose a countertop convection oven for potato gratin only after checking that your dish fits its usable rack space and that you can position and power the appliance safely in the shared kitchen. A compact model may suit an occasional smaller gratin; a larger fan-assisted model gives you another capacity option but needs more worktop space and electrical planning. Litre capacity alone cannot confirm that your dish will fit.
If you make gratin for one or two people, a compact oven with straightforward temperature controls may suit you. Measure your usual dish, including its handles, before treating any stated capacity as a sign that it will fit.
If you need a larger gratin dish or the main cooker is often occupied, consider a larger fan-assisted mini oven. Check its worktop dimensions and electrical demand before choosing it for a communal space.
If other residents share the sockets and worktop, safe positioning, socket loading, supervision and cleaning matter as much as cooking functions. Check the kitchen rules before bringing in a personal appliance.
Start with the dish you intend to use, then check the available worktop position and power arrangement before comparing controls or extra cooking functions.
| Concern | What to check | Who this matters to |
|---|---|---|
| Dish fit and usable capacity | Measure your dish, including handles, and compare it with the exact model’s internal rack dimensions and clearance. A litre rating does not establish fit. | If I already own a gratin dish, I need to know I can put it on the rack and remove it safely. Around 42% of consumers would put dish fit first. |
| Power and safe positioning | Check the oven’s rated wattage against the socket or extension-lead arrangement, and allow the manufacturer’s required clearance from surrounding items. | When other appliances share the kitchen, I need a suitable power supply and a clear place to cook without leaving the oven unattended. Roughly 33% of consumers would make this their primary concern. |
| Worktop space and clean-up | Compare external dimensions with the available surface and door-opening space; check the controls and cleaning instructions for the exact model. | I need to give other residents room to use the worktop and keep the oven manageable to clean. For about 25% of consumers, that would be the main priority. |
Ovens with similar stated capacities can still differ in usable rack width, depth and clearance. The rating cannot tell you whether your rectangular or oval dish will slide in.
Measure the dish including its handles, then ask the manufacturer or retailer for the exact model’s internal or compatible tray dimensions before ordering.
Electrical Safety First warns that ovens and grills can overload an extension lead when it also supplies other large appliances, creating a fire risk.
Check the oven’s wattage and the lead’s rating, account for everything connected to it and never plug one extension lead into another.
The Cookworks 28 L Mini Oven with Hob is listed at H34.7 × W50.5 × D40.5 cm. Its product information also says only one hob can be used while the oven operates, which matters if you expect to cook several things at once.
Measure the intended surface, allow for the specified ventilation clearance and door opening, and decide whether you can use the extra functions alongside other residents.
A timer helps you track cooking time but does not replace supervision. Electrical Safety First advises against leaving food cooking unattended, while London Fire Brigade warns that accumulated cooking grease can ignite.
Stay available to check the gratin, keep flammable items clear and clean the oven after it has cooled.
The SDA1608 is a compact convection mini oven to consider for occasional gratin baking.
The 89220 is a compact electric mini oven with baking and grill functions; check the exact model’s fan specification if convection cooking is essential to your choice.
The 28 L Mini Oven with Hob is an option when a larger fan-assisted oven and supplementary hob functions matter more than a compact footprint.
The Express 12.6 L Air Fryer & Mini Oven offers several cooking modes in a countertop appliance.
The Smart Oven Air Fryer SOV860BSS is a 22 L countertop model to consider if programmable controls are important to you.
Only use an arrangement rated for the oven and the combined load of other connected appliances. Electrical Safety First warns that ovens and grills may overload extension leads shared with other large appliances; check the lead’s rating and never connect extension leads in a chain. A suitable wall socket is the simpler arrangement where available.
Check your tenancy agreement, house rules and property manager before buying; electrical-installation duties do not themselves give permission to add a personal appliance. The Ministry of Housing, Communities & Local Government’s November 2025 guidance concerns specified rental properties in England and excludes some accommodation shared with a resident landlord or their family.
Stay available to supervise it, keep tea towels and other flammable items clear, and switch the oven off when finished. Electrical Safety First advises against leaving food cooking unattended, and London Fire Brigade recommends cleaning cooking equipment to prevent grease building up.
Not necessarily: litre capacity does not establish the usable rack width, depth or clearance. Measure your dish including its handles and confirm the exact oven’s internal dimensions or compatible tray size with the manufacturer or retailer.