If you haven’t met my Miso & Banana Upside-Down Cake, which went viral with the help of <a href="https://www.instagram.com/p/CKhjROOg_Qq/">Instagram</a> and <a href="https://www.tiktok.com/@thriftyb0y/video/6936364612124265734?lang=en">TikTok</a>, let me introduce you: Sweet, caramelized bananas top a moist cake that’s made with mashed, overripe bananas in the batter. Like so many upside-down cakes before it, this one features caramel made from butter and brown sugar—but unlike those other…