Preheat oven to 350°F. Combine flour, baking powder, soda and salt. Cream butter and sugar together until light in texture. Add eggs and vanilla to creamed mixture. Beat thoroughly. Add flour mixture to creamed mixture alternately with milk, beating well after each addition. Add melted chocolate and beat thoroughly.

Brush two 8 or 9 in. cake pans with Cake Release or generously grease pans with solid vegetable shortening and flour, or use Cake Release ( Click here for complete instructions on preparing baking pans.) Pour batter into pans. Bake for 35-40 minutes or until top springs back when touched lightly in center.