For a thinner cake base, try being this recipe in a 9x13 pan and adding 1 1/2 times the recipe for the filling and topping.
If your cake domes too much in the px13 pan, you can always cut a little off the top horizontally with a serrated knife before adding the frosting layer.
The nutritional information provided is automatically calculated by third party software and is meant as a guideline only. Exact accuracy is not guaranteed. For recipes where all ingredients may not be used entirely, such as those with coatings on meats, or with sauces or dressings for example, calorie & nutritional values per serving will likely be somewhat lower than indicated.