Ingredients
Method
- Preheat oven to 200°C / 180°C fan / Gas 6. Line a 12-hole muffin tin with paper cases.
- Sift flour, sugar, baking powder, bicarbonate of soda, salt, and cinnamon into a large bowl.
- Whisk eggs, milk, oil, vanilla, and lemon zest together in a jug.
- Pour wet into dry — fold with 10–12 strokes maximum. Stop with lumps visible — do not smooth.
- Fold in blueberries with 2–3 gentle strokes (from frozen if using frozen).
- Divide between cases — three-quarters full. Press 2–3 extra blueberries into each top. Scatter demerara sugar generously.
- Bake 20–24 minutes until deeply golden and skewer comes out clean. Rest in tin 5 minutes. Transfer to wire rack. Serve warm.
Notes
Fold with 10–12 strokes maximum — lumps in the batter are correct and essential for a light crumb.
Oil gives a lighter, more open crumb than butter — better for blueberry muffins.
Lemon zest makes the blueberry taste more vivid — do not omit.
Use frozen blueberries directly from the freezer — defrosted ones colour the batter grey.
Fill cases three-quarters full — gives the domed top that is the visual signature of a good muffin.
Freeze individually for up to 3 months.
