Vanilla Layer Cake (Print Version)

# Ingredients:

01 - 3 cups all-purpose flour (375g).
02 - 3 cups granulated sugar (600g).
03 - 2 1/2 tsp baking powder (10g).
04 - 1 tsp fine salt (6g).
05 - 1 cup unsalted butter, room temp (226g).
06 - 1 cup egg whites (240g, about 7 eggs).
07 - 1 1/2 cups buttermilk, room temp (360g).
08 - 2 tbsp vegetable oil (30g).
09 - 2 tsp vanilla extract (8g).
10 - Optional: gel food coloring.
11 - 2 cups unsalted butter, room temp (452g).
12 - 1 tbsp vanilla extract or paste (12g).
13 - 1/2 tsp fine salt (3g).
14 - 7 cups powdered sugar (875g).
15 - 1/4 cup heavy cream (60g).

# Instructions:

01 - Heat oven to 350°F. Line three 8-inch pans.
02 - Mix dry ingredients in stand mixer.
03 - Mix in butter until sandy.
04 - Add egg whites, then buttermilk gradually.
05 - Mix in oil and vanilla.
06 - Beat at medium speed for 1 minute.
07 - Divide the batter between pans.
08 - Bake for 33-35 minutes.
09 - Cool for 10 minutes, then freeze for 30 minutes.
10 - Beat butter until smooth.
11 - Add vanilla and salt.
12 - Gradually add powdered sugar and heavy cream.
13 - Beat until smooth.
14 - Level the cooled cake layers.
15 - Stack layers with buttercream between.
16 - Crumb coat the cake and chill.
17 - Apply final coat and decorate as desired.

# Notes:

01 - Use room temperature ingredients.
02 - Can make components ahead.
03 - Freezing layers helps with assembly.
04 - Makes enough for 24 servings.