In a bowl, sift flour, baking powder, sugar, and salt.
Whisk milk and egg until blended.
Stir wet mixture into dry until just combined.
Stir in melted butter, then gently fold in blueberries.
Let rest for 1 hour.
Warm a lightly oiled griddle or pan over medium-high heat.
Pour ¼ cup batter per pancake, cook until bubbles form, flip, and cook until golden.
Stack and serve warm with syrup or toppings.
