NEW YORK-STYLE CRUMB CAKE

New York-Style Crumb Cake image

Provided by Martha Stewart

Time 1h35m

Yield Makes one 9-by-13-inch cake

Number Of Ingredients 18

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FOR THE CRUMB TOPPING:
3 1/2 cups cake flour (not self-rising)
2/3 cup granulated sugar
2/3 cup packed dark-brown sugar
1 1/2 teaspoons ground cinnamon
Coarse salt
2 1/2 sticks unsalted butter, melted
FOR THE CAKE:
1 1/2 sticks unsalted butter, room temperature, plus more for pan
2 1/2 cups cake flour (not self-rising)
1/2 teaspoon baking soda
Coarse salt
1 cup granulated sugar
2 large eggs plus 2 large egg yolks
1 teaspoon pure vanilla extract
2/3 cup low-fat buttermilk
1 cup store-bought blueberry jam (optional)
Confectioners' sugar, for dusting

Steps:

Make the crumb topping: Mix together flour, sugars, cinnamon, and 1/2 teaspoon salt in a medium bowl. Pour warm melted butter over mixture, and mix using your hands until medium to large clumps form.
Preheat oven to 325 degrees. Make the cake: Butter a 9-by-13-inch baking pan. Whisk together flour, baking soda, and 1/2 teaspoon salt in a medium bowl.
Beat butter and granulated sugar with a mixer on medium speed until pale and fluffy, about 2 minutes. Beat in eggs and yolks, 1 at a time, then vanilla. Beat in flour mixture in 3 additions, alternating with buttermilk, beginning and ending with flour. Continue to beat until well combined.
Spoon batter into pan, and spread evenly using an offset spatula. Spread with jam, if using. Sprinkle crumb-topping mixture evenly over top.
Bake until golden brown and a toothpick inserted into the center comes out clean, about 1 hour. Transfer pan to a wire rack. Let cake cool slightly, about 15 minutes. Dust with confectioners' sugar. Serve warm or at room temperature.