- 1 egg white
- 2 tablespoons white sugar
- 2 tablespoons butter, melted
- 1 teaspoon vanilla extract
- 1/4 cup all-purpose flour
- 1/4 teaspoon baking powder
- 1 pinch salt
- 1 1/2 tablespoons milk
- Preheat oven to 350 degrees F (175 degrees C). Line 2 cups in a muffin pan with paper liners.
- Whisk egg white and sugar together in a bowl; stir in melted butter and vanilla extract until smooth. Add flour, baking powder, and salt and mix well. Add milk and mix until smooth. Divide batter equally between 2 prepared cups in muffin pan.
- Bake in preheated oven until cake is set, 10 to 12 minutes.