Lightly spoon flour into dry measuring cups; level with knife. Set aside 1 Tablespoon sugar. Combine flour, remaining sugar, baking powder, salt and baking soda in a large bowl; make a well in the center of the mixture.
Combine rind, juice, oil, and egg in a small bowl, stirring well with a whisk. Add to flour mixture, stirring until just moist. Fold in cranberries and walnuts. Spoon batter into 16 muffin cups coated with cooking spray. Sprinkle evenly with reserved sugar. Bake at 400 degrees for 15 minutes or until the muffins spring back when touched lightly in the center. Run a knife or spatula around outer edge of each muffin cup. Carefully remove each muffin; place on wire rack.