Who each oven suits

Occasional bakers short on worktop space

If you make small desserts occasionally, measure the space available for the oven and its ventilation clearances, then check whether your crumble dish fits. Extra cooking modes may matter less than a workable setup.

Regular small-batch bakers

If crumble and other baked dishes are regular meals, convection, shelf positions, a timer and a supplied tray may be worth considering alongside the oven’s footprint.

Small-kitchen cooks seeking several functions

If you also plan to roast, grill or air-fry, a multifunction countertop oven may suit your routine. Check that its size, bakeware requirements and cleaning demands work in your kitchen.

What matters when choosing

Compact 12L mini oven

Consider it when: You bake one modest dish occasionally and can confirm that your cookware fits.

Trade-off: A small cavity restricts dish shapes and batch size; the De'Longhi EO12012’s stated 26 cm limit applies to round plates, not every type of crumble dish.

19L convection mini oven

Consider it when: You bake small dishes regularly and want convection and more choice of shelf position, as offered by the Tefal Optimo OF445840.

Trade-off: The OF445840 is in the product information as 462 mm deep; allow for the model’s required clearance as well as the appliance itself.

Larger multifunction oven

Consider it when: Baking crumble is only one of several cooking tasks you intend to give a countertop oven.

Trade-off: Check the footprint, dish fit and cleaning access before choosing extra functions; a higher function count does not establish better baking performance.

Concern What to check Who this matters to
Worktop fit and ventilation Measure the available width, depth and height, then add the clearances required by the exact model’s manual. Keep vents unobstructed. When worktop space is tight, I need to know the oven can stand safely without taking over my preparation area. Around 40% of consumers put a workable, safely placed setup first.
Dish fit and baking controls Measure the dish including handles; check usable cavity or maximum-dish guidance, rack position, temperature settings and timer. If I bake crumble often, my usual dish needs to fit and the controls need to suit my recipes. For around 40% of consumers, reliable dish fit and baking control come first.
Functions and cleaning Identify the cooking modes you will use beyond baking; check included trays, compatible bakeware and access for cleaning. I want one countertop appliance for crumble and other everyday cooking, but only if I can accommodate and clean it. Broader cooking versatility is the main concern for around 20% of consumers.

Mistakes to avoid

  • Choosing by capacity in litres alone

    Capacity does not tell you whether a deep, square or handled crumble dish will fit. De'Longhi specifies a maximum 26 cm round plate for the EO12012, which is not a measurement for other dish shapes.

    Measure your dish’s outside width, depth and height, including handles, and compare them with the selected oven’s usable space and element-clearance instructions.

  • Measuring only the oven body

    A countertop oven needs ventilation space beyond its external dimensions. For example, the Tower T14045 listing specifies at least 20 cm clearance on all sides; another model’s requirements may differ.

    Check the manual for your exact model and measure the full space it needs before ordering.

  • Assuming more functions mean better crumble

    Additional cooking modes serve different tasks; they do not by themselves establish how well an oven bakes. Which? assesses oven performance and ease of use separately in its mini-oven testing.

    Start with dish fit and the baking controls you need, then weigh other functions against the space and cleaning they require.

  • Blocking vents or overloading an extension

    Electrical Safety First warns that objects on an appliance can obstruct ventilation and that overloaded extension devices can overheat.

    Keep the oven’s top and vents clear. Use an appropriate wall socket where possible, and do not daisy-chain or overload extension devices.

Brands to consider for these oven types

De'Longhi

The EO12012 is a compact 12L countertop oven to consider when a small appliance is the priority.

  • De'Longhi specifies a maximum 26 cm round plate, giving owners of round bakeware a model-specific fit check.
  • That plate limit does not establish whether a square, deep or handled crumble dish will fit.

Tefal

The Optimo OF445840 is a 19L convection model for buyers who expect to bake small batches regularly.

  • Tefal lists six cooking heights, a baking tray and a 120-minute timer for this model.
  • The product information lists a 462 mm depth; check the available counter depth and ventilation clearance.

Ninja

The DT200UK Foodi is presented as a 10-in-1 multifunction countertop oven for cooking tasks beyond desserts.

  • Its stated multifunction design may be relevant if you will regularly use more than its baking function.
  • Confirm the exact model’s dimensions, intended dish fit and cleaning access before allocating it worktop space.

Joybuy products

Related products coming soon.

Frequently asked questions

Can a countertop mini oven bake apple crumble?

Yes, if the model has a suitable baking setting, reaches your recipe’s temperature and safely accommodates your dish. Check the dish against the oven’s usable space and the manufacturer’s instructions rather than relying on capacity in litres alone.

Is a 12L mini oven big enough for apple crumble?

It can be for a dish that fits, but 12L alone cannot settle the question. De'Longhi states a maximum 26 cm round-plate size for the EO12012; measure your dish including its handles and check the instructions for the model you choose.

How much space should I leave around a countertop oven?

Follow the ventilation clearances in the manual for the exact oven you buy. The Tower T14045 listing, for instance, specifies at least 20 cm on all sides; do not apply that figure to a different model without checking its instructions. Electrical Safety First also advises against storing objects on appliances where they can block ventilation.

Can I use an extension lead with a mini oven?

Only use an extension device if it is suitable for the electrical load and used within its rating. Electrical Safety First advises against overloading extension leads and daisy-chaining them; an appropriate wall socket avoids relying on an extension where one is available.

Does a new electric mini oven need a UKCA mark in Great Britain?

Not necessarily: GOV.UK guidance says Great Britain continues to recognise CE marking alongside or in place of UKCA marking for relevant products. Check the marking and product documentation for the appliance and its intended market; do not assume the same rules apply in Northern Ireland.