Sift and add all dry ingredients to the butter mixture, alternating with room-temperature Buttermilk. Do this in three passes, and start and finish with dry ingredients.
2¼ cup All-purpose flour, ½ teaspoon Baking soda, ½ teaspoon Baking powder, ¼ teaspoon Salt, 1½ cup Buttermilk
Bake the cake for 25-30 minutes or until an insert comes out clean. Leave the cake in the pan for 10 minutes, then flip it on the cooling rack to cool down completely.
How To Make The Icing
Ensure the cream cheese is at room temperature, but the heavy cream should be cold. Mix all the ingredients and use a whisk attachment to whisk them all until the Icing is thick and spreadable.
6 ounce Cream cheese, 1 cup Heavy whipping cream, 1 cup Powdered sugar, 1 teaspoon Vanilla extract
Spread the icing all over the sheetcake and stop it off with sprinkles.