Whisk together the flour, baking soda, and baking powder. Set aside.

Whisk together the melted butter, sugar, milk, and egg until emulsified. 

Pour the wet ingredients into the dry and stir until almost completely incorporated.

Add the strawberries and fold into the batter until uniform.

Fill the muffin cups until almost full.

Bake 15 to 20 minutes or until an inserted toothpick comes out clean.

Cool in pan for 5 minutes before turning out to cool completely on wire racks.