Applesauce Crumb Cake Ingredients Topping: 1/2 cup butter 1/2 cup packed light brown sugar 1/2 cup granulated sugar 1 tsp. ground cinnamon 1 cup flour Cake: 2 cups flour 1 tsp. baking powder 1 tsp. baking soda 3/4 tsp. ground cinnamon 1/2 tsp. salt 6 T. unsalted butter, softened 1 1/4 cups granulated sugar 2 large eggs 3/4 cup applesauce 1 cup sour cream Preparation Topping: Melt butter in medium bowl in microwave. Add brown sugar, granulated sugar and cinnamon. Stir until blended. Add flour, mixing until well combined. Refrigerate until ready to use. Cake: Heat oven to 350. Butter bottom and sides of a 9x13-inch baking pan. Line bottom with parchment and butter parchment. In medium bowl, whisk together flour, baking powder, baking soda, cinnamon and salt to blend. Combine butter and sugar in a large bowl. Beat with electric mixer until blended. Add eggs, beating until combined. Add 1/3 flour mixture, mixing until combined. Add applesauce, mixing until well combined. Add in another 1/3 of flour mixture, then sour cream. Stir in remaining flour mixture. Spread evenly in prepared pan. Bake for 15 minutes. Scatter topping over cake. Bake for another 30-35 minutes.