In a large bowl combine flour, sugar, baking powder and salt. Stir in blueberries.

Add milk, egg and butter. Mix just until dry ingredients are moistened. The batter will be lumpy. Do not overbeat.

Spoon batter into 12 2/12 inch greased muffin cups.

Bake at 400 for 25 minutes or until top springs back when lightly touched. Serve warm.