Preheat the oven to 350 degrees fahrenheit
Add the flour, baking powder, baking soda and salt into a medium bowl. Stir with a fork to combine and set aside
In the base of a stand mixer or with a hand mixer, cream together the room temperature butter and sugar on medium-high speed for 2 minutes until light and fluffy
Add in the eggs and extracts and cream for 2 more minutes on medium-high speed until light and fluffy
Reduce the mixer speed to low and alternate adding the buttermilk and flour mixture, starting and ending with the dry ingredients. To do this, our preferred method is as follows: ⅓ of the dry ingredients, ½ of the buttermilk, ⅓ of the dry ingredients, ½ of the buttermilk, ⅓ of the dry ingredients (pulse after each addition). Note: do not over mix at this stage and just barely mix at each step to evenly combine the ingredients.
Line a 9 inch round metal cake pan with parchment paper and spray with cooking spray. Place the 1/2 batter into the pan and spread in an even layer then place ½ the crumbs on top in an even layer. Spread the second ½ of the batter on top in an even layer and then place the remaining ½ of the crumbs on top.
Bake for 40-50 minutes or until a toothpick comes out clean
Set aside to cool for about 15 minutes before topping with the vanilla bean glaze