Ingredients
Method
1. Prep Your Pan & Oven
Preheat oven to 175°C (350°F). Grease a 9×13-inch baking pan and line it with parchment paper, leaving some overhang on the sides.Tip: This makes lifting the cake out way easier later.2. Combine Dry Ingredients
In a bowl, whisk together flour, baking powder, baking soda, and salt. Set aside.3. Cream Butter & Sugar
In a large bowl, beat butter and sugar until pale, fluffy, and airy.Don’t rush this—this step builds the cake’s texture.4. Add Wet Ingredients
Mix in eggs one at a time, then add vanilla and buttermilk. Blend until smooth.5. Bring It All Together
Gradually add the dry mixture into the wet ingredients. Mix until just combined—no overmixing! Stir in lemon juice and zest.6. Fold in Blueberries
Gently fold in the floured blueberries using a spatula.Pro tip: Coating berries in flour keeps them from sinking.7. Bake the Cake
Pour batter into your prepared pan and spread evenly. Bake for 40–45 minutes, until a toothpick inserted comes out with a few moist crumbs.8. Cool Completely
Let the cake cool fully before adding glaze. You can remove it from the pan or keep it in—your call.Notes
🍋 Make the Lemon Glaze
Mix powdered sugar with lemon juice until smooth and pourable. Drizzle generously over the cooled cake. Let it set before slicing.🍽️ Serving Suggestions
- Top with extra fresh blueberries or lemon zest
- Serve with whipped cream or vanilla ice cream
- Perfect for parties, picnics, or casual desserts
- Slice into squares for easy sharing
💡 Expert Tips for Best Results
- Use room temperature ingredients for smoother batter
- Don’t overmix once flour is added—keeps cake soft
- Want extra lemon flavor? Add more zest, not juice
- Let glaze fully set for that clean, bakery-style finish
🔄 Easy Variations
- 🫐 Swap blueberries with raspberries or mixed berries
- 🍋 Add lemon pudding mix for extra moisture
- 🌱 Use plant-based butter + milk for a dairy-free version
🧊 Storage Tips
- Store covered at room temp for 2 days or refrigerate up to 5 days
- Freeze slices up to 2 months
- Bring to room temp before serving for best texture
❓ FAQs
Can I use frozen blueberries?Yes! Just don’t thaw them first—this prevents excess moisture. Why did my cake turn dense?
Most likely overmixed batter or cold ingredients. Can I make this ahead?
Absolutely. It actually tastes even better the next day. Do I have to use buttermilk?
You can substitute with milk + a splash of lemon juice or vinegar.