At first, the only jingle running through my head was the Brilcreem ad. I knew it couldn't be that as the ad hasn't been around for decades. So, here are a couple of guesses that I thought of later:

Kellogg's rice krispies (Snap, crackle, pop -- rice krispies . . .)
Green Giant niblets corn (In the valley of the jolly green giant . . .)

I don't know if these are still current.  haven't watched television shows for decades, so it's hard for me to come up with answers.

Jak