On the YouTube channel Binging with Babish, chef Andrew Rea recreates menu items from pop culture. He took on the burger from "The Menu," first slicing an onion in a way that he describes as "pole to pole," cutting the halves on a vertical axis rather than the traditional horizontal onion chop. He accompanies this with some frozen crinkle-cut fries thrown into a deep fryer at 375 degrees Fahrenheit for three to five minutes. The "burger balls" measure around four ounces apiece (so he can achieve Margot's desired temperature of "medium"), and after he shapes those, he toasts a sesame seed bun on a flat-top griddle.
Rea then says that, when it comes to the burgers, they're not so much "smashed" as "smeared," and he presses two patties onto the griddle with a large spatula, seasoning them with salt and pepper while cooking. According to Rea, Julian cooks his burgers "Oklahoma style," which just means to take those thinly sliced onions and press them into the burger while it's cooking on that first side ... which then cooks the onions as the burgers get flipped. The flip also means that both patties get topped with sliced American cheese, which Julian says in the film is perfect for a burger because of the way it melts. Put the patties on top of one another, put them on the bun, and you've got the burger from "The Menu."