Homemade Sprinkle Cake. Spray two 8-inch cake pans with nonstick cooking spray. This cake is filled with my favorite Rainbow Sprinkles if you follow me on Instagram you saw that I just received a ton a bags of S P R I N K L E S in the mail the other day.
In medium-sized bowl stir together 1 cup powdered sugar cornstarch water corn syrup and vanilla extract until well-combined. When youre looking for a fun and delicious homemade birthday cake theres really only one option. Mix chunks of butter slowly into the dry mixture with the mixer.
Once all the eggs have been added add in the flour using 2 tablespoons at a time to make sure the mixture is smooth.
Mix together the flour granulated sugar baking powder and salt in a stand mixer fitted with the paddle until fully combined. Lets start with a large bowl or preferably the bowl of a stand mixer. Stir in the remaining ½ cup powdered sugar. Once all the eggs have been added add in the flour using 2 tablespoons at a time to make sure the mixture is smooth.