1. In a large bowl, combine flour, granulated sugar, baking soda, baking powder and salt. Make a well in the center of flour mixture.
2. In medium bowl, combine egg, buttermilk, orange juice concentrate and melted butter; add all at once to flour mixture. Stir just until moistened (batter should be lumpy). Fold in walnuts.
3. Line twelve 2-1/2-inch muffin cups with paper bake cups. Fill the cups 3/4 full with batter. Bake in a 400 degree F. oven for 18 to 20 minutes or until muffins are golden. Remove the muffins from the pans.
4. In a small bowl, combine powdered sugar, orange peel and enough orange juice (2 to 3 teaspoons) to make a drizzling consistency. Drizzle over warm muffins.
Makes 12.
*Note: To make 1/2 cup sour milk, place 1-1/2 teaspoons lemon juice or vinegar in a glass measuring cup. Add enough milk to make 1/2 cup liquid; stir. Let the mixture stand for 5 minutes before using it in a recipe.
Nutrition facts per serving: 195 calories, 8 g total fat, 4 g saturated fat, 32 mg cholesterol, 199 mg sodium, 29 g carbohydrate, 1 g fiber, 3 g protein, 5% vitamin A, 20% vitamin C, 2% calcium, 6% iron.
