When I was a kid, probably late-'60s or early-'70s, I saw an animated cartoon where an elephant explains how to make pot roast. He procured a pot, and then covered it with peanut butter. I don’t remember if he put it into an oven.
Does that ring a bell for anyone? It may have been an ‘insert’ on a ‘variety’ cartoon, or it may have been a Peanut Butter Cap’n Crunch cereal commercial. It seems to me it was a recurring character, so it may have been a cereal commercial.
I’m pretty sure it was animated, but as I type this I wonder if it was a guy in an elephant suit. The only show I can think of where I may have seen it is The Banana Splits Show, or else a Cap’n Crunch commercial. But it could have been somewhere else.
Google suggests it may have been Tomfoolery(or The Tomfoolery Show), in particular a sketch featuring Enthusiastic Elephant (I Googled “pot roast,” “elephant,” and “peanut butter”).
Too late to edit: here’s a YouTube video featuring an episode of The Tomfoolery Show; the pot roast skit isn’t in it, but the elephant is – maybe it’ll look familiar. It’s a Rankin-Bass production, interestingly.
This prompted a weirdly tangential memory from elementary school, from a lesson that must have been trying to teach about pronouns or something like that. The idea was that we were supposed to explain to our teacher how to make a peanut butter sandwich, but every time we said “it”, he assumed that we were referring to a piece of paper with “IT” written on it. Now that I write it out, I can see that it has nothing at all to do with what you were looking for. But weird how that just cropped up out of nowhere.