In large mixing bowl, combine all cake ingredients. Whisk together until well combined.
Preheat oven to 350 F & line cake pans with baking spray.
Fill cake pans evenly with batter & bake for 10 minutes or until toothpick is inserted & comes out clean.
While cakes are baking, combine cream cheese, powdered sugar, butter, & sour cream in mixer. Beat on medium speed until well combined.
Add in the vanilla & broken pieces of Pop-Tarts. Beat on medium-high until fluffy.
Place frosting in fridge for 1 hour.
Remove cakes from pans & place one on top of the other with layers of frosting in between.
Top with extra frosting & pieces of Pop-Tarts. Enjoy!