Brown beef in butter in a large dutch oven.
Add chopped onion and stir until softened.
Add remaining ingredients and stir to combine. Turn off stove and allow to cool.
Transfer chili to a large gallon size freezer bag and freeze.
Cook in Instant Pot from Frozen: Dump frozen contents into the instant pot, adding 1/4 cup water or broth. Pressure cook on HIGH for 14 minutes followed by a 15-minute natural release.