Cinnamon Buttermilk Cake with Vanilla Buttercream Frosting

Ingredients

Cake Ingredients:

• 3 cups cake flour
• 1 ½ cups sugar
• 2 sticks unsalted butter, softened
• 2 tsp baking powder
• 1 tsp salt
• 1 tbsp cinnamon
• 2 cups buttermilk
• 4 eggs
• 2 tsp vanilla extract

Frosting Ingredients:

• 2 sticks unsalted butter, softened
• 1 16-oz box powdered sugar
• 1 tbsp vanilla extract

Instructions

1. 1
   To make the cake, preheat your oven to 350 degrees and spray a large 13 x 18 inch jelly roll pan or sheet tray with cooking spray.
2. 2
   Cream together the butter and sugar until very light and fluffy, then add the eggs one by one---beating well after each addition. Add the vanilla extract and continue beating until batter is smooth and combined.
3. 3
   Whisk together the cake flour, baking powder, salt and cinnamon in another large bowl and add alternately with the buttermilk to the butter and sugar mixture.
4. 4
   Continue beating until there are no lumps, then pour batter into your greased pan, smoothing out the top with a rubber spatula.
5. 5
   Bake cake for 30-35 minutes until edges are golden and begin to pull away from the sides of the pan. Let cool completely before icing.
6. 6
   To make the frosting, beat the butter with the powdered sugar and vanilla until fluffy---about 10 minutes on high. Spread frosting over the cooled cake and cut into small squares.