1/2 c. butter (1 stick)
1/2 c. cocoa or 2 oz. bar unsweetened chocolate
1 c. sugar
2 eggs
1 tsp. vanilla
3/4 c. sifted all-purpose flour

Melt butter with cocoa or chocolate. Stir in sugar. Add eggs, one at a time. Stir well. Add vanilla. Add flour; stir well. Pour mixture in greased and floured pan. Bake at 350 degrees for 30 minutes.