Preheat oven to 330 degrees F. Line 2 4” cake pans with parchment paper and spray the sides with non-stick baking spray. Set aside. If you're making this batter into cupcakes, preheat the oven to 350 degrees F. Line a cupcake tin with 6 liners.
In a medium size bowl, combine all wet ingredients for the cake. Whisk together, then add in dry ingredients. Whisk until smooth. Fold in sprinkles last and divide batter between cake pans. Bake for 35 minutes until a tooth pick inserted comes out clean. If you're baking cupcakes, bake for about 25 minutes.
Let the cakes cool in the pans at room temp for 5 minutes,then invert onto a piece of plastic wrap. Wrap cakes and place in the refrigerator until completely cool, at least 4 hours.
To make the frosting, place cream cheese and butter into a stand mixer fitted with a paddle attachment. Mix until smooth. Add powdered sugar. Mix until smooth, scrape down sides as needed. Transfer the frosting to a pastry bag.
To build the cake, remove cake from the refrigerator and remove the plastic. Use a serrated knife to trim the edges off the top and bottom of the cake. Then cut each layer in half. You should have 4 thin layers of cake.
Place a little frosting on your serving plate, then the first layer of cake on top to secure it in place. Pipe a thin layer of frosting on the cake. Add another layer of cake then frosting until all layers are built.Pipe frosting around the entire cake. Use an offset spatula to smooth it out to crumb coat the cake. Once it’s relatively smooth, place the cake in the refrigerator for 30 minutes. Once frosting has chilled a bit, it will be easier to smooth out the frosting using a hot offset spatula. Dip the offset spatula in some hot water to aid in smoothing out your frosting. To decorate like the photo,take sprinkles and press them all onto the sides of the cake. I recommend doing this over the sink so the sprinkles don’t fly everywhere. Top the cake with fresh berries if desired. This cake can be made up to 3 days in advance and held in the refrigerator. Enjoy!