Crumb Topping: – 1 3/4 c. cake flour – 1/2 c. granulated sugar – 1/2 c. light brown sugar – 1 tsp. cinnamon – 1/4 tsp. salt – 1/2 c. (1 stick) butter, melted Cake: – 2 c. cake flour – 1/2 c. granulated sugar – 1 1/2 tsp. pumpkin pie spice – 1/2 tsp. baking soda – 1/2 tsp. baking powder – 1 c. pumpkin puree – 1/2 c. buttermilk – 1/4 c. vegetable oil – 2 eggs + 1 yolk – 1 tsp. vanilla extract – Powdered Sugar for dusting
In a mixing bowl, combine the flour, sugar, pumpkin pie spice, baking soda, baking powder and salt. Using a hand or stand mixer, mix in the pumpkin, eggs, buttermilk, oil and vanilla. Stop to scrape down the sides of the bowl. Batter should be smooth.