Rhubarb Coffee Cake - from Smitten Kitchen
Preheat the oven to 325 and grease a 9x13 glass baking pan
For the Rhubarb Filling
1 pound of rhubarb - about 3 very large stalks
1/2 cup sugar
4 teaspoons cornstarch
1 teaspoon ground ginger
For the Crumbs
2/3 cup brown sugar
2/3 cup sugar
2 teaspoons ground cinnamon
1 teaspoon ground ginger
1/4 teaspoon salt
1 cup melted butter
3 1/2 cups flour
For the Cake
2/3 cup sour cream
2 large eggs
1 egg yolk
4 teaspoons vanilla extract
2 cup cake flour
1 cup sugar
1 teaspoon baking soda
1 teaspoon baking powder
1/2 teaspoon salt
12 tablespoons softened butter cut into pieces
I had a cake helper! Cut rhubarb into 1/2 inch chunks. In a mixing bowl, combine with sugar, cornstarch and ginger. Set aside.
To make the crumb topping, in another mixing bowl combine the sugars, cinnamon, ginger and salt. Then mix in the melted butter. After that, mix in the flour with a spatula until a thick dough is formed. It will be REALLY thick, don't worry. Set aside.
To make the cake, in another mixing bowl, combine sour cream, eggs, yolk and vanilla. Stir to combine and set aside.
In a last and final bowl, combine the flour, sugar, baking soda, baking powder and salt.
This is a recipe you have to commit to. I was using ALL of these dishes. (Please excuse our mismatched drawers - we are doing some construction.)
I used a stand mixer to finish up the cake... mix the flour, sugar, baking soda, baking powder and salt until all combined. Mix in the softened butter and a spoonful of the sour cream mixture and mix on medium until the flour is moistened. Add the remaining sour cream mixture in two batches. Beat for 20 seconds after each time you add the mixture. Set aside 1/2 a cup of batter.
Pour the batter into the prepared baking pan (except for the 1/2 cup you have reserved.) Layer on the rhubarb that has been marinating, scrape all of the juices out of the bowl. Dollop on the remaining batter - it won't be even, but that's OK. Break up the crumb topping and spread over the cake batter. Leave big crumbs - there will be a ton of crumb topping!!
Bake for 45-55 minutes at 325. A toothpick inserted in the middle of the cake should come out with just a few small crumbs sticking to it, it may look really moist, but that might be the rhubarb. The cake shouldn't look wobbly in the middle when its done. Once cooled, sprinkle with powdered sugar and serve.
A few things about this recipe...
Smitten Kitchen says that this recipe would be good with a variety of other fruits - I plan to try it this summer with blueberries and/or cherries!
Next time I make this, I will not reserve the 1/2 cup of batter to dollop over the top. Instead I will put all of the batter on the bottom of the pan, and then I'll lightly press the rhubarb into the batter so that it "sticks" before I put on the crumb topping.
I made this coffee cake on Sunday evening and brought it to work with me on Monday morning. It kept really well and was nice and moist everyone at worked seemed to like it. Since it is a bit involved to make, I would definitely make this the night before for a brunch.