Yellow Cake with Chocolate Frosting

Ingredients (19)

• For the Yellow Cake:
• 3 cups (345 g) cake flour
• 2 teaspoons (8 g) baking powder
• 1 teaspoon (6 g) salt
• 1 cup (226 g) unsalted butter, at room temperature
• 1 3/4 cups (350 g) granulated sugar
• 1/3 cup (72 g) grapeseed oil
• 5 large eggs, at room temperature
• 2 egg yolks, at room temperature
• 1 teaspoon (4.2 g) pure vanilla extract
• 1 teaspoon (4.2 g) butter extract
• 1 cup (240 g) sour cream, at room temperature
• For the Chocolate Buttercream Frosting:
• 2 cups (452 g) unsalted butter, slightly cold
• 5 cups (625 g) confectioner's sugar, measured then sifted
• 1 tablespoon (12 g) pure vanilla extract
• 1 cup (170 g) semi-sweet or dark chocolate chips
• 1/4 cup (57.75 g) heavy whipping cream
• Pinch of salt