Preheat oven to 350 degrees.
In a KitchenAid mixer on high-speed, mix eggs and sugar together until maximum volume and very fluffy.
Combine butter and chocolate in microwave safe container for 3 minutes at 50% power or until melted sooth and warm.
To the egg mixture, add vanilla extract and gently fold in flour (sifted).
Spray 12 - 4ounce Soufflé tins with nonstick spray.
Bake for 10 minutes. Rotate pans and bake for an additional 8 minutes.
Serve room temperature of warm with ice cream or creme anglaise.