Easy Caramel Cake | America's Test Kitchen

Ingredients

• 1/2 cup buttermilk, room temperature
• 4 large eggs, room temperature
• 2 teaspoons vanilla extract
• 2 1/4 cups (11¼ ounces/319 grams) all-purpose flour
• 1 1/2 cups (10½ ounces/298 grams) granulated sugar
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 3/4 teaspoon salt
• 16 tablespoons (2 sticks) unsalted butter, cut into 16 pieces and softened
• 12 tablespoons (1 1/2 sticks) unsalted butter, cut into 12 pieces and softened
• 2 cups packed (14 ounces/397 grams) dark brown sugar
• 1/2 teaspoon salt
• 1/2 cup heavy cream
• 1 teaspoon vanilla extract
• 2 1/2 cups (10 ounces/283 grams) confectioners' sugar, sifted