Mike, I agree with CJ that the table saw is a good way to do this. I've made many picture frame rabbets with two cuts on the table saw.
I’ve not attempted this before, but I’ve heard of using a jointer in that fashion. I usually do my rabbets on my table saw. Normally with a dado blade.
I need to cut a 3/8X1 1/2 inch rabbet in some hard maple 1x3’s. Right now I’m doing it on router table and it takes a long time to do and the results could be better.
I did some googling and it looks like this could be done on the smaller of the two jointers in the shop.
Is this a safe and viable way to do this?
If any SA’s are open to overseeing this I will book some shop time to give it a try.