Ingredients :

• Cake:

• • • 1 1/4 cups cake flour
    • 1/2 cup granulated sugar
    • 1/4 teaspoon baking soda
    • 1/4 teaspoon table salt
    • 6 tablespoons unsalted butter 3/4 stick, cut into small pieces, softened
    • 1 large egg
    • 1 large egg yolk
    • 2 teaspoon vanilla extract
    • 1/3 cup buttermilk

• Crumb:

• • • • 1/3 cup sugar
      • 1/3 cup dark brown sugar
      • 3/4 teaspoon ground cinnamon
      • 1/8 teaspoon table salt
      • 8 tablespoons unsalted butter 1 stick, melted and still warm
      • 1 3/4 cups cake flour 7 ounces

Instructions :

• Crumb:

• • Add sugar, dark brown sugar, cinnamon, salt and butter into a bowl.
  • Whisk together and add in cake flour until combined. Form into a dough ball.
  • Let sit until you are done making the cake.

• Cake:

• • Preheat oven to 325 degrees.
  • Coat baking spray or butter and flour in a square 8×8 pan.
  • In a stand mixer, add flour, sugar, baking soda, and salt
  • On low speed, add butter in pieces.
  • Mix for 1-2 minutes, or until you no longer see the butter and the mixture looks like a crumble.
  • Add in your remaining cake ingredients, egg, egg yolk, vanilla, and buttermilk
  • Mix until light and fluffy, another 1-2 minutes.
  • Pour and spread cake batter into greased baking pan.
  • Take the crumb mixture and break apart into chunks about the size of marbles over the dough in a uniform pattern.
  • Bake for 35 to 40 minutes, or until a knife is inserted and comes out clean.
  • Let cool, then dust with powdered sugar.