Preheat oven to 350° and spray a 13 x 9 inch baking dish. Set aside.
Cake Layer
In a large mixing bowl, add melted butter.
Stir in sugar, eggs and vanilla until combined.
In a medium bowl, whisk together flour, baking soda, salt and cinnamon.
Alternate flour mixture and buttermilk into the sugar mixture, mixing well after each addition.
Fold in apples and pecans.
Add cake batter into prepared baking dish. Set aside.
Cheesecake Layer
In a medium bowl, beat cream cheese until well blended, about 2 minutes.
Add eggs and beat on low until combined.
Beat in powdered sugar one cup at a time.
Fold in oatmeal and stir until combined.
Gently spread the cheesecake topping over the cake covering it entirely.
Bake for 50-55 minutes.
Remove from oven and let cool completely before serving (Best served cold, but still delicious warm, especially the edges).
Notes
Nutritional values are approximate.
Please note that these values can change with different brands and any modifications made to the recipe. For the most accurate information, use a nutritional calculator with the exact brands and measurements.