Summer Fruit Kuchen

With grocery stores now brimming with summer produce, it was a no-brainer for me to try this recipe that caught my eye in Woman's Day magazine. A Kuchen is a buttery cake with a crumb topping, usually chock full of fruit, and it hails from Germany, though some Romanians also lay claim to its ancestry.
This cake is super easy to whip up, and it was devoured in my household the day it was made. It was so good, I made it for the better half's birthday, and stuck a candle it. Yes, I'm manipulative.
Lots of butter, but maybe the hint of fruit makes this somewhat healthy? But coming back to reality, I used peach, plum and blueberries as the recipe originally calls for, but this cake would be versatile with almost anything. Apples would be a great substitute.

Summer Fruit Kuchen - Source - Woman's Day Magazine - July 2009
1 1/2 cups all-purpose flour
1 tsp baking powder
1/4 tsp cinnamon powder
1/4 tsp salt
1 1/2 sticks softened unsalted butter (3/4 cup)
3/4 cup sugar
2 eggs
1 1/2 tsp vanilla extract
1/3 cup milk

Fruit:
1 1/2 cup blueberries
1 ripe peach, pitted and cut in wedges
1 ripe plum, pitted and cut in wedges

Crumb Topping:
3 Tbsp all-purpose flour
3 Tbsp light brown sugar
2 Tbsp unsalted butter
1/4 tsp cinnamon powder

Optional: Confectioners sugar for dusting (I omitted)

1. Heat oven to 350 degrees F. Line a 9 in. square baking pan with non-stick foil (or spray lightly with non-stick cooking spray).
2.Mix all dry ingredients in a bowl.
3. Beat butter and sugar till smooth.
4. Beat in eggs and vanilla to butter mixture until just combined.
5. On low speed, gradually add flour mixture and milk until blended.
6. Fold in 1/2 of the blueberries into the batter.
7. Pour batter into prepared cake pan.
8. Scatter remaining blueberries onto batter, and arrange plum and peach slices on top.
9. Prepare Topping -
In a small bowl, rub all ingredients for topping with fingers till it resembles clumps and the butter has been distributed evenly.
10.Bake 55 - 60 minutes or until a wooden pick inserted in the middle comes out clean. (The cake will rise slightly during baking).
11. Cool cake, lift out of pan by holding the ends of the foil.
12. Nom, nom, nom :-)