Total time: 30 minutes
2 cups all-purpose flour, spooned and leveled
2 teaspoons baking powder
1/2 teaspoon kosher salt
Zest from 1 lemon
2/3 cup granulated sugar
1/2 cup (1 stick) unsalted butter, melted and cooled
1/2 cup whole milk
2 large eggs
1 1/2 cups mixed berries (blueberries, strawberries, blackberries, etc.)
2 tablespoons turbinado sugar, optional
Preheat oven to 375° F. Line 12 muffin cups with paper liners or coat with nonstick cooking spray.
In a large bowl, whisk together the flour, baking powder, lemon zest and salt.
In a medium bowl, whisk together the granulated sugar, butter, milk, and eggs. Add to the flour mixture and stir until just combined (a few flecks of flour is OK). Fold in the berries (do not overmix).
Spoon the batter into the prepared muffin cups and sprinkle with turbinado sugar, if using.
Bake until a toothpick inserted in the center of a muffin comes out clean, 20 to 25 minutes. Let cool in the pan for 5 minutes. Transfer to a wire rack to cool completely or serve warm.