The girls might have been famously inept, but Steve actually owned a bakery (granted, not of his own volition, and Tony wasn't entirely sure how hands on he was about the venture; exploring that topic might land Tony in an apron and that wasn't a risk he was willing to take) and should have brought the Avengers' culinary talents into balance. Ergo, Kate had made the decision to assume Tony's lack of kitchen prowess with that question, making him raise his eyebrows to remind her to watch it with the teasing and steady her with a splayed hand to watch him at work. He did offer, after all. And how hard could toast be?
He started confidently for the mugs for the coffee, easing into the project, but once they were collected his sure step abruptly stopped and he hovered, lost, in the middle of his expansive kitchen. There was an easy solution to this: "JARVIS...toaster," Tony requested, eyes darting around for anything that looked toast-y.
"3 o'clock, sir, bottom cupboard, to the right," JARVIS supplied helpfully, and Tony snapped as if he totally knew that all along, leaving the mugs by the carafe as he passed as per instructed. Of course, once it was in his hands he had to confront the next problem. He froze again, staring at the toaster on the counter until the computer seemed to sense the trouble in the air and suggested, "Bread box." Not that Tony knew what that was. "Your left."
Expertly crafted toast, a range of spreads and preserves and a pair of perfectly poured cups of coffee later, Tony sat proudly with Kate at the breakfast table, sipping in contentment. Sure, he knew how to make toast. Maybe he could have even fried an egg if she asked him, too. He was an endless well of talents. Of course, now that all of the distractions were behind them, they might have to talk about Cassie.