Indulge in Luxurious Triple Chocolate Layers - Quickie Treats

Ingredients

• 56g unsalted butter, room temperature
• 104g sugar
• 58g sour cream, room temperature
• 1/2 tsp vanilla extract
• 2 egg whites, room temperature
• 81g all-purpose flour
• 43g Hershey's special dark cocoa powder
• 1 1/8 tsp baking powder
• 1/4 tsp salt
• 60ml milk, room temperature
• 30ml water, room temperature
• 170g semi-sweet chocolate chips
• 30ml light corn syrup
• 120ml heavy whipping cream
• 4 large egg yolks
• 52g sugar
• 420ml heavy whipping cream, divided
• 227g semi-sweet chocolate chips
• 86g powdered sugar
• 1 1/4 tsp unflavored powdered gelatin
• 23ml water
• 255g white chocolate chips
• 420ml heavy whipping cream, cold, divided
• 38g powdered sugar