Workplace racism

A department manager was glancing at my new band-aids on my right index finger. I said my cat attacked me. The following question he asked was, "Did you cook your cat into soup...?” He said other things that I did not hear because I was caught with the phrase, “Did you cook your cat into soup?” Manager said he did not know I had cat as an excuse after I told him don't make racist jokes regarding animals like cats. I documented this when I transferred, but he claimed he forgot. I told HR but little has been done except "depends on the context" as usual.