In a medium-size blender, add all of the chaffle cake ingredients and blend it on high until it's smooth and creamy. Allow the batter to sit for just a minute. It may seem a bit watery but it will work just fine.
Add about 2 to 3 tablespoons of batter to your waffle maker and cook it for about 2 to 3 minutes until it's golden brown.
In a separate bowl, start making the whipped cream vanilla frosting.
Add all of the ingredients and mix it with a hand mixer until the whipping cream is thick and forms soft peaks.
Allow the keto birthday cake chaffles to cool completely before frosting your cake. If you frost it too soon, it will melt the frosting.