01 - 
                Preheat oven to 175°C (350°F). Line a muffin tin with paper liners.
              
              
              
                02 - 
                In a medium bowl, whisk together the flour, sugar, baking powder, baking soda, and salt.
              
              
              
                03 - 
                In a separate bowl, whisk together the melted butter, egg, vanilla extract, and buttermilk.
              
              
              
                04 - 
                Pour the wet ingredients into the dry ingredients and stir until just combined. Be careful not to overmix.
              
              
              
                05 - 
                Gently fold in the diced strawberries.
              
              
              
                06 - 
                Scoop the batter into the muffin tin, filling each cup about 3/4 full. Sprinkle the tops of the muffins with a little extra sugar.
              
              
              
                07 - 
                Bake for 18-22 minutes or until a toothpick comes out clean and the tops are golden brown.
              
              
              
                08 - 
                Let the muffins cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.