Not sure if it's new in Tescos generally or just in my area - they've started doing containers of cauliflower cous cous/rice in the chilled prepared veggie section. They also do courgette noodles and butternut squash spaghetti. All £1 and currently on 3 for 2. I've tried the cauliflower rice and the butternut squash spaghetti but the courgette noodles looked a little slimy lol.

I microwaved the cauli rice as I didn't fancy it stir fried as suggested. It was pretty yummy. The butternut squash spaghetti was lovely stir fried in a little oil but tended to break up into small pieces, but still good.