Mix flour, sugar, baking powder, baking soda, and salt until evenly combined.

Whisk milk, egg, melted butter, and vanilla until smooth.

Combine wet and dry ingredients gently; adjust thickness with a little milk or flour.

Heat a nonstick skillet over medium and lightly grease it.

Cook pancakes (¼ cup each or squeeze-bottle shapes) until bubbly, then flip and cook until golden.

Adjust as needed: lower heat if burning, add flour if too thin, add milk if too thick.

Serve warm with berries, powdered sugar, or chocolate chips.