Preheat oven to 350 degrees. Prepare 6 mini loaf pans by spraying with non-stick spray.
For Cinnamon Swirl: Combine all cinnamon swirl ingredients in a small bowl. Stir together with a fork till crumbly. Set aside.
For Batter: Whisk together melted butter, oil, sugar, eggs, and vanilla in a large mixing bowl.
Combine flour, soda, salt, and cinnamon. Add to wet mixture with diced apples. Stir till just combined.
Divide half of the batter between the six pans. Spread evenly over the bottom of the pan. Sprinkle the cinnamon mixture over the batter in each of the pans. Top with the remaining batter and smooth with a spoon.
Bake at 350° for 40-45 minutes or till golden brown.