Preheat Oven to 325.
Use either non-stick foil or just use regular foil & then spray with non-stick spray & line a metal 9"x9" baking pan. (please do this- as it helps remove the brownies from the pan later on. This is a step I contemplated skipping & doing it how I would normally do it- but I decided to follow the instructions & I was happy I did)
Stir butter & chocolate in a heavy large saucepan over low heat until all is melted.
Remove from heat. Whisk in sugar & then eggs- one at a time.
Stir in vanilla, salt & food coloring.
Sift flour & baking powder (I usually just run a whisk through it for a few stirs & it works perfectly) & stir in & blend well.
Transfer batter to prepared pan.
Bake until puffed & dry looking- or until a toothpick inserted in the center comes out with some moist batter attached. (about 30-35 minutes).
Cool completely in pan on a rack. (I was impatient & stuck mine directly into the freezer to cool it faster)