I don't have one now but I used to have a Cookworks oven from Argos and found it very good in my tent. It cost about £30 at the time but that was a few years ago.
I found it to be great just for myself but you would struggle to feed a large family due to the size. They are good though and have an element at the top and one at the bottom. You can use either or both so if you want to make toast or grill something you just use the top element. If you want to heat or bake you can use both. I found I could do a whole dinner and things I would normally boil or heat on the hob can be done inside in a foil dish...so very versatile.
I also have a mini oven which I use when camping or away in my little caravan. I also use a small slow cooker.
These, combined with my suitcase stove and BBQ means I can cook loads of different meals.
watch aldi and lidl, they normally start at about £20 but get reduced quickly
I picked up one last yr for £5
------------- 2022
North and West wales grand tour (in T5)
Matlock (in T5)
New forest and IOW (in T5)
New Forest
La tranche sur mer
jevea (Valencia)
2023
Cotswolds
Tenby
(added a Compass Rallye to crew)
Royan
La tranche Sur Mer
2024
royan
La tranche
I can vouch from the cookworks one from argos we found there's only so much you can cook with the conways twin burner and grill the good thing about the cookworks it fitted perfectly in the space below the grill in the conway kitchen
Pete