Loved this idea. Neat to imagine HOT FUDGE poured over ICE CREAM and MARINARA over RIGATONI. Apt; perfect for stacked answers.
I personally love ketchup, mustard, relish, sauerkraut, pickles, chili, and/or cream cheese on my HOT DOG … but not ONIONS, so that didn't work as well for me. And CHEESE over a BURGER felt different than the others, since a CHEESEBURGER is a thing, while HOT FUDGE ICE CREAM, MARINARA RIGATONI and ONIONS HOT DOG are not. Ah well.

I picked up the theme quickly and wondered how many compromises I'd see. Double-stacked answers aren't too bad to work with, but they definitely cause difficulties. And incorporating four sets into a 15x is a big challenge! I was really impressed with the upper left corner, only IN LA a bit gluey, with the added color of IN DETAIL and DEFCON / IM HIT! That's a beautiful piece of work up there, a perfect way to open up a puzzle.
I like how the opposite corner has WATER GUN and CANOLA OIL worked through the themers. Great added zest. REGALER is iffy to my ear though, and although MRES, SSN, and EDU are all fine, their concentration in one area felt a bit inelegant. I debated whether I liked LOGIA, and finally decided that I thought it was a fine word.
Not as much for SCAUP and AGITA though. Perhaps it's because there were already a few rare-ish words in the puzzle? And the SCAUP / CERA crossing will be rough for many. It's such a shame, as Michael CERA is one of my favorite actors. If he'd only become a headliner … yes, there was "Superbad," but I feel like he still hasn't reached the stardom he deserves.
So, not surprising to see some compromises around those stacked theme answers. But overall, fewer than I expected, so I finished feeling pleased.
Why isn't anyone remaking "Three's Company," by the way? Well, they'd have to pare back Mr. ROPER's rampant homophobia, of course. And the creepy lechery. Not sure why I found him so funny as a kid, but maybe Michael CERA could give him a fresh spin.