- Ever since I’ve bookmarked this recipe from America’s Test Kitchen, I’ve been eager to put this Ultimate Sticky Buns to test. Sticky Buns are really like cinnamon rolls with a nutty, gooey caramel topping. Most of the sticky buns I’ve tasted tend to be greasy and overly-sweet. Honestly, I’m not a fan of overly buttered baked goods. This recipe promises light, moist and fluffy dough thanks to the addition of flour roux (aka tang zhong) which is a cooked flour paste. This method can also be used for soft bread rolls and buns