Tiffani Thiessen has been staying busy while quarantined amid the coronavirus pandemic by cooking up a storm in the kitchen.While the 46-year-old Alexa & Katie alum, who runs her own food blog, loves both sweet and savory meals, there’s one dish she’s recently been whipping up over and over again with her 10-year-old daughter, Harper — banana bread.“I know people joke, ‘How many banana breads have you made?’ And during the pandemic, and I feel like we’ve been probably [baked] about a hundred,”