Orange Muffins

I found this recipe on ALL RECIPES and it is very good.

2 cups all-purpose flour 2 teaspoons baking powder 1/4 teaspoon baking soda 1 teaspoon salt 1/2 cup white sugar 1 tablespoon grated orange zest 1 tablespoon orange extract 2/3 cup orange juice

1/2 cup melted butter 2 eggs 1/2 cup ground walnuts (optional) 1 tablespoon melted butter 1/4 cup packed brown sugar 1/2 teaspoon ground cinnamon

DIRECTIONS:

1.	Combine flour, baking powder, baking soda, salt, white sugar and grated orange peel. Stir in orange juice, 1/2 cup melted butter, eggs and chopped nuts.
2.	Pour into 12 muffin cups.
3.	Blend 1 tablespoon melted margarine, 1/4 cup brown sugar, 1/2 teaspoon cinnamon and sprinkle on top of each muffin. Bake in a preheated 350 degrees F (175 degrees C) oven for 20-25 minutes. Serve hot. http://allrecipes.com/Recipe-Tools/Print/Recipe.aspx?RecipeID=6825&origin=detail&&Servings=12