New Zealand Billy Sponge - cooking recipe

Ingredients

4 eggs
1 cup sugar (plus more for coating tin)
1 cup flour
1/2 teaspoon baking powder

Preparation

Grease a 12x23 cm loaf tin. (And grease it well.) Sprinkle sides and base with sugar.
Beat eggs until pale and fluffy. Slowly add sugar. Fold in flour and baking powder. Pour into prepared tin. Sprinkle extra sugar on top. Bake at 180 degrees Celsius (350 F.) for 35-40 minutes until top is golden and crunchy and the loaf is cooked through.
Remove from tin and cool on wire rack.