Preheat the oven to 350°F. Grease two 8 x 8" baking pans and set aside.

In the large bowl of a stand mixer, cream together the sugar and shortening until fluffy.

Add in the vanilla and eggs. Beat until well combined.

In a separate large bowl, sift together the flour, salt, baking soda, baking powder and 1/2 tsp of the ground cinnamon.

Gradually mix the dry ingredients with the batter, alternating with the sour cream. Mixing well.

Stir in the apples using a wooden spoon.

Divide into prepared baking pans.

In a small bowl, use a dough blender to combine the brown sugar, 1 tsp cinnamon, and butter until combined yet crumbly.

Sprinkle the topping over the batter.

Bake for 30 minutes or until a toothpick comes out clean.

Delicious when served warm or cool. Cover and refrigerate any leftovers.