| 1 | Preheat oven to 350°F. |
| 2 | Butter a 9"x13" baking dish. |
| 3 | Melt together the chocolate squares and chips, and butter. |
| 4 | Cool beat together eggs, sugar and vanilla. |
| 5 | Beat in chocolate mixture. |
| 6 | Mix flour, salt and baking powder. |
| 7 | Stir into batter. |
| 8 | Add marshmallows and walnuts. |
| 9 | Pour into pan. |
| 10 | Bake 40-45 minutes. |
| 11 | Do not overcook. |
| 12 | Brownies will become firm when cool. |
| 13 | Makes 30-36 squares. |
