PREHEAT the oven to 350 degrees Fahrenheit and adjust the oven rack to the middle position.
COMBINE all of the wet ingredients together in a large bowl. Slowly pour in both boxes of Vanilla Cake mix and continue stirring until smooth and creamy throughout.
SPLIT the batter evenly into (4) 6-inch parchment lined springform cake pans. If you don’t have this many, simply work in two batches.
BAKE at 350 degrees Fahrenheit for 24-30 minutes or until a toothpick inserted into the center comes out clean. Remove from the oven and let cool for about 15 minutes before transferring to a wire rack to cool completely.
PREPARE the frosting:
ADD in palm shortening and powdered sugarIn a stand mixer with a paddle attachment or using a large bowl and an electric hand mixer.
MIX on medium high until smooth throughout.
ADD the rest of the ingredients except for the coconut oil and mix for about 1 minute.
DRIZZLE in coconut oil slowly while turning the mixing speed up to high. You may need a tablespoon more to reach your desired consistency depending on the other brands of products you have used, but I got the perfect texture with only 3 tablespoons.
LAYER the cakes with buttercream in between once they are cooled down.
ENJOY with your favorite seasonal toppings.