Double Chocolate Butterfinger Layered Cake

INGREDIENTS

• 1/2 cup milk chocolate chips
• 1/4 cup milk
• 1 cup all-purpose flour
• 1/3 cup cocoa powder
• 1 cup granulated sugar
• 1/2 teaspoon kosher salt
• 1/2 teaspoon baking soda
• 2 large eggs
• 1/2 cup sour cream
• 1/2 cup canola oil
• 2 sticks unsalted butter, softened
• 2 cups powdered sugar
• 1/2 cup cocoa powder
• 1 regular size bar Butterfinger candy bar