Man, that’s some good eatin’. In my impoverished undergraduate days I substituted Bacon Bits for the Spam. It’s what I had in the cupboard.
Throw in some shredded cheese of your choice! Perhaps some cumin or whatever spice you like, and presto!!
I also highly recommend adding some vegetables, or meat that’s left over. Makes it much better.
Frozen peas are the best, but whatever you like. Plus add some more milk or water so it’s not dry.