Found this several times on the 'net. Perhaps TQS will post the adapted one the gang enjoyed at the taping.
Maida Heatter's Santa Fe Brownies
from one of Maida Heatter's chocolate dessert cookbooks.
Cake Ingredients
1 ½ c unbleached flour
1 ½ t baking powder
¾ t salt
6 oz unsweetened chocolate
6 oz semi-sweet chocolate
8 oz unsalted butter
5 eggs
1 ¼ c sugar
1 ½ c brown sugar
1 T vanilla
8 oz walnuts
Line a 9-by-13 pan (with vertical sides, if possible) with aluminum foil. Put a few dabs of butter in the pan and put it in the oven to melt the butter. Then use some crumpled plastic wrap to spread the butter over the foil. Preheat the oven to 350°F.
Sift together the flour, baking powder, and salt.
Melt the chocolate and butter in a double boiler.
Mix the eggs, sugar, and vanilla until smooth. Stir in the chocolate mixture, then the dry ingredients. Stir in about 2/3 of the walnuts. Set aside 2¼ cups of the mixture, and spread the rest in the pan.
Cream cheese topping ingredients
(This may be doubled for very cheesy brownies.)
12 oz cream cheese
3 oz butter
1½ t vanilla
¾ c sugar
3 eggs
Warm the cream cheese and butter to room temperature. Beat the cream cheese and butter until smooth. Then beat in the vanilla and sugar. Beat in the eggs, one at a time.
Pour the cheese mixture over the chocolate in the pan. Soften the remaining 2¼ cups of cake mixture by stirring it briskly. Then pour it over the top of the cheese mixture in the pan. Cut diagonally through the top two layers to marblize them. Lay the remaining walnuts on top.
Bake for 75 minutes. If you doubled the cream cheese, bake for about another 30 minutes. When the top is sufficiently brown, put some foil on it, especially around the edges, to keep the cheese from burning.
Put the whole business in the refrigerator overnight. The next day, turn the cake out of the pan onto a board, peel off the foil, and carefully cut the cake into small pieces. Wrap the pieces in wax paper to keep them from sticking together.