Heat oven to 400

Mix flour, salt, and baking powder together.

In another bowl, beat the egg and add the sugar, brown sugar and milk. Mix. Stir in the cooled melted butter. 

Add the wet ingredients to the dry ingredients and mix just enough to combine. Fold in 1 cup of blueberries.

Fill your muffin tin with cupcake liners and fill each 3/4 full with the batter.

Bake at 400°F for 20 minutes. These are wonderful served with some butter fresh out of the oven! We had some for breakfast and snack and froze the rest.