Protein Birthday Cake (Keto)

slice of protein birthday cake with three layers of cake and with vanilla protein frosting and naturally colored sprinkles, all on a white plate with more sprinkles on it

Print Recipe

5 from 2 votes

Makes one 3-layer 8" cake.

Prep Time1

Cook Time30

Course: Dessert

Cuisine: American

Servings: slices

Calories: 327kcal

Author: Andréa

Equipment

mixing bowl
8" round pans
8" parchment rounds
oven thermometer
rubber spatula
piping bags
large offset spatula
cake scraper

Ingredients

Cake

2 bags Proteinfull Baking cake mix
6 large eggs
6 tablespoons oil or unsweetened applesauce
1 ⅓ cups water

Frosting

2 recipes Easy Sugar Free Frosting (Keto Vanilla Buttercream)

Sprinkles 🥳

2 tablespoons all-natural sprinkles (with sugar) or
2 tablespoons all-natural sugar free sprinkles

Instructions

Preheat your oven to 325F (160C). (Use an oven thermometer for best results.)
Line the bottom of three 8" round pans with parchment paper, and then spray with non-stick cooking spray.
Combine cake mixes with eggs, oil (or applesauce) and water. Mix just until no lumps remain.
Pour the batter evenly divided into the three pans.
Bake for 24-28 minutes, or just until a toothpick inserted comes out clean.
Cool for about 10 minutes before removing the cakes from the pans. Then cool completely before frosting.
Layer and frost the cake. (This is a helpful video on how to frost a layer cake.)
Add sprinkles, slice, and enjoy!
The cake will store well (frosted or unfrosted) refrigerated or frozen.

Notes

The nutrition below (in the Nutrition section) is for how the recipe was prepared in these photos, i.e. with unsweetened applesauce instead of oil, with double the frosting recipe, and with sugar-sweetened natural sprinkles. Admittedly, while it looks great in the photo, that's a lot of frosting.

Nutrition