Preheat oven to 375°F. Grease muffin tins or line with baking cups, if using.
In a large bowl, combine flour, sugar, baking powder, salt and lemon rind. Beat egg in medium bowl; add milk and butter. Add the egg mixture to dry ingredients.
Stir until just mixed (batter will be lumpy). Stir in blueberries.
Fill muffin cups ⅔ full. Bake for 20 minutes.
To make the topping, combine melted butter and lemon juice. Measure sugar in a separate dish. Dunk tops of slightly cooled muffins into lemon butter mixture and then dip in sugar.
Enjoy!
Notes
Recipe source: The Best of the Best and More
Recipe by Salu Salo Recipes at https://salu-salo.com/blueberry-lemon-muffins/