INGREDIENTS
Unsalted butter, at room temperature, for greasing the pans
All-purpose flour, for dusting the pans
4 cups
dry CAKE MAGIC! CAKE MIX (see below)* , whisked well before measuring
1 tsp
baking powder
1/2 cup
full-fat plain yogurt (preferably not Greek yogurt)**
1 cup
unsalted butter, melted and cooled, or 1 cup vegetable oil
1/4 cup
water
4
large eggs, at room temperature
1 cup
pureed fresh blueberries
1/2 cup
granulated sugar
1/2 cup
water
salt
1 tbsp
pure vanilla extract OR the seeds scraped from 1 split vanilla bean
1 cup
unsalted butter, at room temperature
3 oz
cream cheese, at room temperature
salt
4 cups
(one 16-ounce box) confectioners' sugar
1/2 tsp
pure vanilla extract
1 tsp
baking powder