8 oz (2 sticks) unsalted butter
8 oz bittersweet chocolate, chopped
2 cups brown sugar
2 teaspoons real vanilla extract
4 eggs
1 cup flour
1/2 teaspoon salt
1/4 teaspoon baking powder
1/4 teaspoon baking powder
3-5 oz (~1 cup) chopped walnuts
3-5 oz (~1 cup) chopped pecans
Preheat oven to 350F. Cut a piece of parchment paper (NOT wax) on the bottom of a 9-13" pan (use straight edged aluminum or glass, not those nonstick ones which will burn the brownies).
Melt butter on stove top or microwave. Once melted, remove from heat and add chopped chocolate. Let it rest off the heat until the chocolate is melted, around 10 minutes. If it doesn't melt, heat on low or microwave at 50% power until it does watching VERY carefully NOT to overcook or the chocolate will burn! Add sugar and vanilla and mix with spatula until blended. Whisk/mix in 4 eggs until thoroughly combined.
Mix dry ingredients together (flour, salt, baking powder) then mix/fold into chocolate mixture. Fold in nuts.
Bake in preheated oven for 30 minutes.
Let cool. To cut, chill in refrigerator overnight or freeze and they will be easier to cut.