Free Mighty Slice High Protein Cheesecake
Fancy a FREE high-protein cheesecake?
GreenJinn have a cracking cashback coupon live right now for Mighty Slice's Caramelised Biscuit High Protein Cheesecake (115g).
Pick one up from a participating Sainsbury's Local, upload your receipt through the app, and you'll get the full £3.10 refunded straight to your GreenJinn account.
Hit the big pink button below to head to GreenJinn and add the coupon.
You'll need to buy your slice at a selected Sainsbury's Local — use the map in the app to find your nearest participating store.
Upload your receipt as proof of purchase to claim.
The offer is valid from 27th May 2026 and runs until 23:59 on 29th May 2026 — so today is the last day to grab one!
Single use per customer.