Festive eggnog cake is the perfect dessert to serve this holiday season! Make this moist eggnog-flavored cake bursting with delicious seasonal spices and layered with creamy eggnog buttercream!
Preheat the oven to 350 degrees Fahrenheit. Grease 2 8-inch round cake pans and set aside.
In a large mixing bowl, whisk together 2 ¼ cup cake flour, 1 cup granulated sugar, ½ cup light brown sugar, 2 ½ teaspoons baking powder, ½ teaspoon salt, 1 teaspoon ground nutmeg, and ½ teaspoon ground cinnamon.
Add the 1 ¼ cup eggnog, 2 teaspoons vanilla extract, and ½ cup vegetable oil to the dry ingredients and beat with the paddle attachment of a stand mixer or a hand mixer just until fully combined.
In a separate bowl, whip 4 large egg whites until medium-stiff peaks form. Fold into the batter until no streaks of egg whites remain.
Separate the batter evenly into the two cake pans and bake for 35-40 minutes, or until the center of the cake springs back when pressed on.
Allow the cake layers to cool completely before frosting. For easier frosting, wrap the cooled cake layers in plastic wrap and freeze for 4 hours or chill in the fridge overnight before assembling.
Eggnog Buttercream
Add 1 cup unsalted butter to the bowl of a stand mixer fitted with the paddle attachment. Alternatively, you can use a large mixing bowl and use a hand mixer to beat the butter until smooth and creamy.
Add 5 ½ cups powdered sugar, ½ teaspoon ground nutmeg, 1 teaspoon vanilla extract, ¼ teaspoon rum extract, and 1-2 dashes salt. Mix until combined.
Use immediately to frost the cooled cake layers for best results.