4 eggs, beaten
1 c. butter
4 squares baking chocolate (unsweetened)
1 tsp. baking powder
2 tsp. vanilla
1 c. flour
2 c. sugar
1/4 tsp. salt

Melt chocolate and butter in a 9 x 13 inch pan on range top. Remove. Add eggs and beat them in pan. Then add rest of ingredients. Stir until well blended. Bake 40 to 50 minutes in 350 degree oven. High Elevation changes that, I've discovered which help, add 1 tablespoon oil and 1 to 2 tablespoons flour. Bake only 30 minutes.