Mom's Prize-Winning Raw Apple Cake

Step 1
Preheat the oven to 350 degrees F (175 degrees C). Grease and flour a 9×13-inch pan.

Step 2
Make the topping: Mix together walnuts, both sugars, and cinnamon together in a bowl.

Step 3
Make the cake: Mix together flour, both sugars, cinnamon, and salt in a large bowl. Make a well in the center and pour in sour milk, oil, and eggs. Beat with an electric mixer until smooth, then fold in chopped apples.

Step 4
Pour batter into the prepared pan and sprinkle topping mixture evenly over top.

Step 5
Bake in the preheated oven until a toothpick inserted into the center of the cake comes out clean, about 45 minutes.