Vanilla Buttermilk Crumb Cake

Ingredients

• 0.3 teaspoon baking soda 
• 0.5 cup firmly brown sugar dark packed
• 0.5 cup butter cooled melted
• 0.5 cup butter softened
• 0.5 cup buttermilk 
• 3.5 cups cake flour divided
• 1 large eggs 
• 1 teaspoon ground cinnamon 
• 9 servings powdered sugar 
• 0.3 teaspoon salt 
• 1 cup sugar divided
• 2 teaspoons vanilla extract 

Equipment

• bowl
• oven
• hand mixer
• cake form

Directions

1. Preheat oven to 32
2. Stir together 2 cups flour, 1/2 cup sugar, brown sugar, cinnamon, and melted butter in a bowl. Set aside.
3. Beat softened butter and remaining 1/2 cup sugar at medium speed with an electric mixer until fluffy.
4. Add egg and vanilla, beating until blended.
5. Combine baking soda, salt, and remaining 1 1/2 cups flour; add to butter mixture alternately with buttermilk, beginning and ending with flour mixture. Beat at low speed until blended after each addition.
6. Spoon batter into a greased and floured 8-inch square cake pan, and sprinkle with reserved topping mixture.
7. Bake 30 to 35 minutes or until a wooden pick inserted in the center comes out clean. Cool; dust with powdered sugar, and cut into squares.