Super crumb coffee cake

A soft, tender, easy-to-make coffee cake heavy on the crumbs! The original recipe is from Sallys Baking addiction. Enjoy!

Ingredients

All-purpose flour (maida) - 2 cups.
Sugar - 1 cup
Salt - 1 tsp
Butter - 10 tbsp (1 1/4 stick)
Baking powder - 1 tsp
Baking soda - 1/2 tsp
Buttermilk - 3/4 cup
Brown sugar - 2/3 cup
Vanilla extract - 2 tsp
Cinnamon - 2 tsp

Method

Preheat the oven to 350 F. Grease a 9x9 square pan with butter.

Cut the butter into small pieces and combine the butter with the flour, sugar and salt in a bowl.  Whisk the mixture using a fork until the mixture resembles coarse crumble. Set aside 1 cup of the mixture.

Mix the baking powder and baking soda with the remaining flour mixture.  Add the egg, buttermilk and vanilla and beat it with a beater. Beat until the mixture is smooth, fluffy and looks like frosting.  Pour the batter into the greased pan.  Add the cinnamon and brown sugar to the reserved flour mixture.  Sprinkle the crumbs over the batter and press lightly so they stick.  

Bake the cake until the center is firm and a toothpick inserted in the center comes out clean (50 minutes). Allow the cake to cool completely before serving. Enjoy!