Magic cake

A couple of years ago I made a cake (well actually an impossible pie) which my dad still brings up. I can't find the same recipe I used, but he loved this magic cake. I found it to be very similar. 

- 4 eggs, separated 

- 1 teaspoon vanilla

- 3/4 cup sugar

- 125g butter, melted

- 3/4 cup flour

- 2 cups lukewarm milk

1. Preheat the oven to 160 degrees Celsius. 

2. Beat your egg whites until stiff peaks form. Set aside.

3. Whisk the egg yolks and sugar together until smooth. Add the butter and vanilla and whisk for another 1-2 minutes. Add the flour.

4. Slowly add the milk. Add the egg whites in 3 batches. 

5. Bake for 40-70 minutes. Mine took a little over an hour.