Coffee cake is a type of sweet bread. It has one layer of a muffin-like cake that’s swirled with ribbons of cinnamon-sugar and sometimes finished with a thick and crumbly streusel topping.

Buttery, crumbly streusel adds a lovely texture to desserts, and it’s so easy to whip up. Here’s how to make a general streusel topping recipe that can be used on pies, muffins, bars, coffee cakes and ...