Preheat oven to 400°F.
In a large bowl, combine the 2 ½ cups all-purpose flour, 2 teaspoons baking powder, 1 teaspoon baking soda, and ½ teaspoon salt, then set aside.
In a separate bowl, whisk together the melted ½ cup unsalted butter, ¾ cup granulated sugar, and ½ cup brown sugar.
Whisk in the 1 cup whole milk, 2 large eggs, and 2 teaspoons vanilla extract until well combined.
Fold in the dry ingredients, mixing until just combined. Then fold in the 2 cups finely chopped strawberries
Line a 12-count muffin tin with muffin liners or grease well. Fill each muffin cup most of the way full.
Bake in the preheated oven for 5 minutes, then turn the temperature down to 350°F. Bake until the centers are completely set, about 14-17 more minutes, or until a toothpick inserted in the center comes out clean.