The lemon extract in this muffin recipe imparts a unique flavor to the blueberry muffins. If you’re out of lemon extract, try substituting lemon juice instead.
Place all dry ingredients in a bowl; mix with a spoon.
Add egg, milk, oil and lemon extract. Fold in blueberries.
Fill greased muffin tin 2/3 full. Bake at 400 degrees F. for 16-18 minutes.
After baking, spread butter on top of muffins, then sprinkle with sugar (optional).