1. Add all the ingredients for a large mixing bowl. With a large spoon mix it all until the cake batter is well combined. Make sure that there are no lumps in the batter at all.
2. Grease a large rectangular cake pan with some unsalted butter or cooking spray. Then pour the eggnog cake batter in the cake pan.
3. Place the cake pan in preheated oven to 350°F (180°C). Bake the cake for about 40 minutes. Insert a toothpick in the middle of the cake, if it comes out clean the cake is cooked through and fully set on the inside.
4. Then remove the eggnog cake from hot oven and let it cool down in the cake pan. Once the cake is cool enough to touch, remove it from the cake pan and let the cake cool for another 20 minutes on a wire rack.