Boston Cream Pie Cupcakes - Chew Nibble Nosh

Ingredients

• Vanilla Cupcakes
• 6 Tbsp. butter, softened
• 3/4 cup sugar
• 6 Tbsp. sour cream, at room temperature
• 2 tsp. vanilla extract
• 3 large egg whites, at room temperature
• 1 1/4 cups all purpose flour
• 2 tsp. baking powder
• 1/4 tsp. salt
• 6 Tbsp. whole milk, room temperature
• 2 Tbsp. water, at room temperature
• Pastry Cream Filling
• 2 egg yolks
• 6 Tbsp sugar
• 1 1/2 Tbsp. cornstarch
• 1 cup + 2 Tbsp. whole milk
• 1 Tbsp. butter
• 1 tsp. vanilla extract
• Chocolate Ganache Topping
• 12 oz. bag semi sweet chocolate chips
• 2 Tbsp. light corn syrup
• 3/4 cup + 2 Tbsp. heavy whipping cream