Whisk eggs and ½ cup sugar then fold in flour gradually. Pour the batter into creased cake molds.
Bake the sponge cake at 350°F (175°C) for 20-25 minutes. Let cool then slice into two layers.
Heat milk with ½ cup sugar then add vanilla and butter. Stir well then let cool at room temperature.
Add remaining butter then whip the cream until its light and creamy.
Layer sponge, strawberries and cream in a springform pan. Chill and serve.