Crumb Coffee Cake

I love a simple coffee cake with streusel topping. This one from America's Test Kitchen seemed promising.

The dough is made in the food processor and includes sour cream just 3 Tablespoons of butter. It's then spread into a baking pan and the topping is scattered over the top. Easy enough.

The cake tastes fine but it's more spongy than a coffee cake should be. I like coffee cake that is more crumbly than spongy. This was fine but I wouldn't make it again.