White Chocolate Parfaits

I made these on Valentine's Day to finish off our dinner. They were actually the only part of the meal that I made from scratch, so I won't post the rest of the stuff we ate. They are super yummy and pretty easy to make. The recipe will make four parfaits, we only made two and then ate the leftover custard in crepes the next morning for breakfast. YUMMY!!!
3/4 cup whipping cream
1/4 cup sugar
2 tsp corn starch
2 egg yolks
4 squares (1 oz each) white baking chocolate
1 tsp vanilla extract
3 cups whipped topping
1 1/2 cups fresh blueberries (I used strawberries instead)
1 1/2 cups fresh raspberries
Sliced strawberries and additional whipped topping for garnish, if desired.

What to do:
In a saucepan, heat the cream just to a boil. In a bowl, combine sugar and cornstarch; stir in yolks until combined. Stir a small amount of hot cream into yolk mixture; return all to pan. Cook and stir for 2 minutes or until mixture reaches 160 degrees and is thickened. Stir in chocolate until melted; add vanilla. Cool to room temperature, about 15 minutes.
Fold in whipped topping. Place 1/4 cupr each in four parfait glasses. Combine berries; place 1/4 cup in each glass. Repeat layers of chocolate mixture and berries twice. Cover and refrigerate for at least 1 hour. Garnish with strawberries and whipped topping if desired.