Whisk egg, lemon zest and sour cream in medium bowl until blended. Add muffin mix; stir just until blended. Stir in blueberries.
Spoon evenly into 6 paper-lined muffin cups; sprinkle with sugar.
Bake 18 to 20 min. or until toothpick inserted in centers comes out clean. Cool 5 min. Remove muffins from pans to wire racks; cool completely.
Calories From Fat
% Daily Value*
Total Fat 4g
Saturated Fat 1.5g
Trans Fat 0g
Total Carbohydrates 39g
Dietary Fibers less than 1g
* Percent Daily Values are based on a 2,000 calorie diet.
* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.