Best Moist Apple Cake

Ingredients

• Cake:
• 2 cups all-purpose flour
• 1/2 cup whole wheat flour
• 1 teaspoon baking soda
• 1 teaspoon baking powder
• 1 teaspoon salt
• 1 teaspoon cinnamon
• 1 1/4 cups vegetable oil
• 1 1/2 cups white sugar
• 1/2 cup brown sugar
• 3 eggs
• 1 teaspoon vanilla
• 4 apples, thinly sliced
• 1 1/2 cups finely chopped walnuts
• Topping:
• 1 cup brown sugar
• 1/2 cup butter
• 1/4 cup milk
• 1/2 cup finely chopped walnuts

Directions

Preheat oven to 350 degrees F (175 degrees C).

Whisk all-purpose flour, whole wheat flour, baking soda, baking powder, salt, and cinnamon together in a bowl. Whisk oil, white sugar, 1/2 cup brown sugar, eggs, and vanilla together in a separate bowl. Stir flour mixture into sugar mixture; fold apples and 1 1/2 cups walnuts into batter. Pour batter into a 10×13-inch baking dish.

Bake in the preheated oven until cake is set, about 1 hour. Pierce surface of cake in several places with a large fork.

Stir brown sugar, butter, and milk together in a large microwave-safe bowl. Microwave on high until sugar is dissolved and mixture boils, about 2 1/2 minutes. Sprinkle 1/2 cup walnuts over hot cake and pour brown sugar mixture over the top.