Salty version of peanut butter on toast?

I love peanut butter toast. It's cheap, healthy, filling, and very quick. But sometimes I don't want the sweetness. What's your salty version of this quick, healthy snack?

Edit2: Please stop saying the same thing over and over. Yes, peanut butter should not be sweet. Got it. Although, there are some who agree that even straight peanut butter made solely from peanuts does taste a little sweet.

Edit: I'm trying to avoid butter and cheese. I love it, but my stomach can only take a little bit. I might be lactose-sensitive. :(