Let’s talk about how to make crumb topping! This three-ingredient crumb cake topping is made with brown sugar, all purpose flour, and cold butter (plus there are optional mix-ins, like cinnamon). This brown sugar crumble topping isn’t just for crumb cake—I use it on muffins, quick breads, cakes, pies, and fruit desserts.
*You can also add in other spices, like nutmeg, cardamom, etc.