Heavenly Brownies(Never Fail)

Directions

1. 1
   Sift flour and baking powder together.
2. 2
   Melt chocolate and butter (or margarine) together in large saucepan.
3. 3
   Blend in the sugar.
4. 4
   Add eggs, one at a time, beating well after each.
5. 5
   Stir in nuts, vanilla and dry ingredients.
6. 6
   Spread in well-greased 8 or 9-inch square pan.
7. 7
   Bake at 350° for 25 to 30 minutes, just until mixture begins to pull away from sides of pan.
8. 8
   Do not overbake. Cool completely before cutting into squares.