This cake had a great texture. I don't like things that are especially sweet and to me it was perfect- a nicely understated sweetness and flavor. I might experiment with adding thinly slices apples under the crumb top.
Rating: 2 stars
The texture was wonderfully spot-on, but the flavor was...lackluster. I would make this again, but would add more cinnamon to the crumbs (and possibly more brown sugar in place of some of the flour). I would also reduce the vanilla by 1/2 tsp. and replace it with 1/2 tsp. of pure almond extract.
Rating: 3 stars
It was okay... I think it could definitely be sweeter (the cake & the crumbs). The crumbs tasted mostly of flour. Barely a hint of brown sugar and cinnamon, and I used all premium/high end ingredients. I may try it again adding more cinnamon, brown sugar and butter to crumbs (hopefully it won't screw it up).