Chocolate Chip Layer Cake | Food Stuff

Ingredients

• 2 teaspoons baking powder
• 1 teaspoon baking soda
• 2 cups buttermilk (I like Saco powdered buttermilk )
• 1½cups (9 ounces) miniature chocolate chips (I like Ghirardelli )
• 4 cups confectioners' sugar, sifted
• 2 large eggs plus 2 large egg yolks, at room temperature
• 2 teaspoons espresso powder, optional
• softened butter and flour for the pans
• 1/2 cup light heavy cream
• 2 cups firmly packed light or dark brown sugar
• 1/4 teaspoon salt
• 3½cups unbleached all-purpose flour
• 16 tablespoons (1/2 pound) unsalted butter, at room temperature
• 1/2 cup unsweetened cocoa powder, sifted
• 1 tablespoon pure vanilla extract