fresh oranges

Instructions

1. Preheat the oven to 350°.  Line an 8" square pan with aluminum foil with extra foil at two of the ends so you can pull out the brownies easily after baking.
2. Cut a small slice of the orange from one of the ends and set the orange with the cut end down.  With a sharp knife, carefully run the knife down the curve of the orange to slice the peel away.  Try to make sure there's as little pith (white spongy part) attached to the peel as possible.  After the outer peel is cut away, cut as much of the remaining pith away from the orange as you can. 
3. Cut the remaining orange into quarters and put in a food processor (or blender) along with the outer orange peels (throw the pith away - it's bitter).  Process/puree the orange until fairly smooth - 1 1/2 to 2 minutes.
4. Prepare the fudge brownie mix as instructed on the package, substituting the pureed orange for the water it calls for.  Stir by hand until completely combined and pour into the prepared pan.  Bake for 34-37 minutes.  Cool in the pan for about 10 minutes, then pull out by the aluminum foil and let cool completely on a rack (30-45 minutes or put in the refrigerator to cool more quickly).
5. Prepare the frosting:  Combine the softened butter and powdered sugar in a mixing bowl and mix until blended (will be kind of powdery).  Add the cocoa powder and mix on low for 10 seconds.  Add the vanilla and a pinch of salt.  Add the milk, 1 tbsp. at a time until desired consistency.  Spread on completely cool-to-the-touch brownies.