2 ounces unsweetened baking chocolate
1 1/4 cups sugar
1 teaspoon vanilla
1 cup all-purpose flour
1/2 teaspoon baking powder
1/4 teaspoon salt
1/2 cup semi-sweet real chocolate chips
To substitute unsweetened cocoa for unsweetened baking chocolate, use 3 tablespoons unsweetened cocoa plus 1 tablespoon butter for each ounce of unsweetened baking chocolate.
Reduce baking temperature by 25°F if using dark or nonstick baking pan.
To prepare brownies in 13x9-inch baking pan, double all ingredients. Bake for 35 to 40 minutes or until brownies just begin to pull away from sides of pan.