A standard streusel recipe combines butter ... To make the ultimate crumb topping, you only need two ingredients: one boxed cake mix in any flavor you choose, and butter. One method that results ...
For the crumb topping ... small pea-sized crumbles. Divide topping evenly among muffins. Bake muffins for 20 minutes, or until golden and a toothpick comes out clean when inserted. Let cool on a wire ...