Whizz up your Doritos in a food processor until it resembles fine crumbs.
Add the butter and parmesan and whizz once more to combine. Tip out into a lined cheesecake dish. Press down to flatten.
In a bowl, mix together your cream cheese, sour cream, bacon, chives, spring onion, salt and pepper.
Spoon this mix into your cheesecake base and pop in the fridge to set.
Bring out, top with chilli jam and adorn with extra Doritos! Dig in!