Preheat the oven to 350. Spray 3- 8 - inch cake pans with bakers spray
Whisk together in a bowl the flour, baking soda, salt, baking powder and vanilla, set aside
In another bowl beat butter and sugar until light and fluffy
Add eggs one at a time beating in each egg well. Beat in vanilla
Aternating sour crem with flour mixture, stiring until combined
Divide evenly in cake pans and bake until a toothpick pick comes out just clean about 18 to 22 minutesCool 10 minutes in pans then cool completely on a rack
MAKE Cinnamon Filling and Frosting
In a large bowl combine all frosting ingredients and start beating on low until combined then increase speed for a light creamy texture.
Fill and Frost Cake
Place one cake layer, bottom up on serving plate
Spread with some filling
Add second cake layer, bottom up
Add some filling
Add last third layer and frost entire cake
To garnish, sprinkle with Cinnamon sugar orange sprinkles and shaved white chocolate
Allow cake to be refrigerated a couple of hours for easy slicing but serve at room temperature
