Cold Temperature Glue
I had to test this myself when 'gluing' an aluminum mounting plate to a stainless steel door. No 'glue' or epoxy that I tried worked under a repeated freeze / heat cycle test. What did work was RTV silicone rubber. Your chioce of colors. If the stress is too much for this application, 2-part epoxies designed for wide temperature range might work. Over-build the RTV or epoxy at the break so it will have a better grip. Give them 2 days to fully set before use I might add that if the torque at this location is very high (it did break there after all) and neither epoxy or RTV will hold then you may need to surf the web based on the make and model of freezer and try to order just the broken part.