Coat the bottom and sides of 4 6-oz baking dishes with vegetable cooking spray; sprinkle with granulated sugar. Set aside.
Melt butter in a small saucepan over medium heat; add flour, stirring until smooth. Cook flour mixture, stirring constantly, 1 minute.
Add half and half, stirring constantly; stir in 4 tbsp sugar. Cook over medium heat, stirring constantly, until thickened. Remove from heat.
Beat egg yolks until thick and pale. Gradually stir half of the hot half-and-half mixture into egg yolks; add to remaining hot mixture, stirring constantly. Cook over medium heat 2 minutes; stir in vanilla. Cool 15 to 20 minutes.
Beat egg whites at high speed with an electric mixer until foamy. Gradually add remaining 2 tbsp sugar, beating until soft peaks form. Gradually fold egg whites into the egg yolk mixture. Spoon into prepared baking dishes.
Bake at 350 for 25 minutes or until puffed and set. Sprinkle with powdered sugar, and serve immediately with Vanilla Creme Sauce.
Vanilla Creme Sauce:.
Combine 1 tsp vanilla extract, 1 cup sugar, and 2 tsp cornstarch in a heavy saucepan; gradually stir in whipping cream. Cook stirring constantly, over low heat until sugar dissolves.
Beat 8 egg yolks until thick and pale; gradually stir about half of hot whipping cream mixture into yolks. Add to remaining hot mixture, stirring constantly.
Cook, stirring constantly, over medium heat until thickened. Pour through a wire-mesh strainer into a small bowl, discarding lumps. Cover and refrigerate up to 3 days. Serve with Vanilla Souffles, fresh fruit, or pound cake.