One Egg Sponge Cake

Ingredients

• 1/2 cup sugar
• 1 egg yolk
• 1 tablespoon butter
• 3 tablespoons water
• 2/3 cup flour
• 1 teaspoon baking powder
• pinch salt
• 1 egg white

Method

1. 1 In a mixing bowl, cream together the sugar, egg yolk, and butter until well combined.
2. 2 Add the water, flour, baking powder, and salt; beat until mixed.
3. 3 Fold in the stiffly beaten egg white.
4. 4 Pour into a well-greased and floured pan and bake in a slow oven (300°F) for 30 minutes.