Pineapple Upside-Down Cake - cooking recipe

Ingredients

1/2 c. butter
1 c. sugar
2 eggs, separated
1 1/2 c. flour, sifted
1/2 tsp. baking soda
1 tsp. cream of tartar
1/2 c. milk
1/2 tsp. vanilla

Preparation

Cream the butter and sugar at high speed until well mixed. Add beaten egg yolks and mix well.
Sift together the flour, baking soda and cream of tartar; add alternately with the milk to the mixture.
Add vanilla and beat at medium speed for 2 minutes. Beat egg whites until soft peaks form.
Fold into batter.