Preheat oven to 350 degrees F (175 degrees C). Grease and flour muffin pan or use paper liners. Sift flour, baking powder and salt together and set aside.
Cream butter and sugar until light and fluffy. Add eggs and beat well. Add milk and flour mixture. Beat until combined. Stir in blueberries.
Fill muffin cups 2/3 full. Bake at 350 degrees F (175 degrees C) for 25 to 30 minutes