PrintSpeculoos Apple Crumble CakeCookie butter and speculoos cookie crumbs infuse this autumnal cake with flavor. Course DessertCuisine AmericanKeyword dessertPrep Time 20 minutes minutesCook Time 45 minutes minutesServings 9 squaresIngredientsfor the cake:3/4 cup light brown sugar1/4 cup canola oil1/4 cup creamy cookie butter1 egg1/2 cup buttermilk1 1/2 teaspoons vanilla1 teaspoon baking soda1/4 teaspoon baking powder1 1/4 cups flour1/4 teaspoon Saigon cinnamon1/4 tea...