Coffee Layer Cake With Vanilla Espresso Buttercream

INGREDIENTS

3 3/4 cups

cake flour, sifted before measuring*

1 tbsp

baking powder

3/4 tsp

baking soda

1 1/2 tsp

salt

2 tsp

instant espresso powder

1 1/8 cups

unsalted butter, room temperature

1 1/2 cups

granulated white sugar

1/2 cup

packed brown sugar

eggs, room temperature

1/2 cup

sour cream, room temperature

1 1/2 tbsp

vanilla extract

1/2 cup

whole milk, room temperature

1/2 cup

strong coffee, room temperature

2 cups

unsalted butter, room temperature

8 cups

powdered sugar

4 tsp

vanilla extract

3 tbsp

whole milk, room temperature

1 tbsp

instant espresso powder

1/4 tsp

salt