Makes one 9-inch square Imagine Goldilocks sampling all kinds of crumb cakes. Some would have too much crumb topping (more crumb than cake). Some wouldn't have nearly enough sweet crumbs (too much ...

Bake the cake until a toothpick inserted in the center comes out clean, 45 to 50 minutes. Cool the cake completely on a wire rack. Once cooled, invert the cake onto a plate and remove the parchment.