01 - Preheat your oven to 400°F. Line a standard 12-cup muffin tin with paper liners or grease thoroughly.
02 - In a large bowl, whisk together flour, baking powder, baking soda, and salt until evenly distributed.
03 - In a separate bowl, whisk oil or melted butter, sugar, eggs, milk, and vanilla extract until well combined and smooth.
04 - Add the wet ingredients to the dry ingredients. Gently stir until just combined—do not overmix to maintain tender texture.
05 - Fold in the diced strawberries carefully, ensuring even distribution throughout the batter.
06 - Divide batter evenly among the muffin cups, filling each about ¾ full to allow for proper rising.
07 - Sprinkle tops generously with coarse sugar for a crunchy bakery-style finish.
08 - Bake for 22 to 25 minutes, or until a toothpick inserted in the center comes out clean and tops are golden brown.
09 - Cool in the pan for 5 minutes, then transfer muffins to a wire rack to cool completely before serving.