Boston Cream Pie

Ingredients

• 1 1/4 cups cake flour
• 1 tsp. baking powder
• 1/4 tsp. salt
• 4 large eggs, at room temperature
• 1 cup of sugar
• 1/2 cup whole milk
• 1/3 cup vegetable oil
• 1 1/2 tsp. vanilla extract
• 1 1/2 cups whole milk
• 1 tsp. vanilla extract
• 2 large eggs plus 4 egg yolks
• 1/2 cup sugar
• 1/4 cup cornstarch
• pinch of salt
• 4 ounces semisweet chocolate, finely chopped
• 1/2 cup heavy cream