In a bowl, combine brown sugar, butter and maple flavoring.
Beat in the eggs one at a time.
Combine flour and baking powder; add to egg mixture.
Stir in walnuts.
Pour into a greased 9" square baking pan.
Bake at 350F for 30 minutes or until brownies test done.
Cool. Dust with confectioners' sugar if desired.

Per Serving (excluding unknown items): 176 Calories;
5g Fat (25.2% calories from fat); 4g Protein;
30g Carbohydrate; 1g Dietary Fiber;
23mg Cholesterol; 46mg Sodium.
Exchanges: 1/2 Grain(Starch); 1/2 Lean Meat;
1 Fat; 1 1/2 Other Carbohydrates.