Spray a bundt cake pan or a tube pan liberally with cooking spray and set aside.

Mix together oil, sugar, eggs, and vanilla in a large bowl.

In a separate bowl, sift together the dry ingredients: flour, salt, and baking soda. Then add this to the wet ingredients before folding in the pecans and diced apples.

Bake at 350°F for 1 hour.

Place butter, brown sugar, and milk into a small saucepot over medium-high heat. Stir constantly and bring it to a gentle boil. After it begins gently boiling, continue to stir and allow to cook for about 3 minutes.

Pour the sauce over the hot cake while it's still in the pan. Allow the cake to cool completely before removing it from the pan.