Preheat oven to 325 degrees
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.)
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 & 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 35-45 minutes).
Cool completely in pan on a rack.