Step 1: Prepare the Oven and Pan
Preheat the oven to 350°F (175°C). Grease a standard 9 × 5-inch loaf pan and line it with parchment paper, leaving some overhang to help lift out the cake.
Step 2: Mix the Dry Ingredients
In a medium bowl, whisk together the flour, baking powder, baking soda, and salt. Set aside.
Step 3: Cream the Butter and Sugar
In a large bowl, beat the softened butter and sugar until light and fluffy, about 2–3 minutes.
Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract, Greek yogurt, lemon zest, and lemon juice if using.
Step 4: Combine the Batter
Add the dry ingredients to the wet mixture in two additions. Mix gently until just combined. Avoid overmixing, which can make the cake dense.
Toss the blueberries with one teaspoon of flour, then gently fold them into the batter.
Step 5: Fill the Loaf Pan
Spoon the batter into the prepared pan and smooth the top with a spatula. If desired, scatter a few extra blueberries over the surface.
Step 6: Bake Until Golden
Bake for approximately 50–65 minutes, or until the top is golden and a toothpick inserted into the center comes out clean or with a few moist crumbs.
If the top browns too quickly, loosely cover it with foil during the final part of baking. Begin checking for doneness around the 50-minute mark, as ovens vary.
Step 7: Cool Before Slicing
Let the loaf cool in the pan for about 15 minutes. Lift it out carefully and transfer it to a wire rack to cool completely before slicing.
Allowing the cake to cool helps it set and makes cleaner slices.
Tips for the Best Blueberry Loaf Cake
Measure the flour correctly: Too much flour can make the loaf dry. For best results, use a kitchen scale.
Use room-temperature ingredients: Butter, eggs, and yogurt mix more evenly when they are not very cold.
Don’t overmix: Stir only until the flour disappears to help keep the crumb tender.
Coat the blueberries lightly: A small amount of flour can help distribute the berries through the batter, although some may still sink.
Check the center: Loaf cakes take time to bake through. Use a toothpick to check the thickest part before removing the cake from the oven.
Fresh or Frozen Blueberries?
Both options work well. If using fresh blueberries, wash them and dry them thoroughly before adding them to the batter.
Frozen blueberries can be added directly from the freezer without thawing. Fold them in gently to reduce color streaking in the batter.
Delicious Variations
Blueberry Lemon Loaf
Add extra lemon zest and a simple lemon glaze made with powdered sugar and lemon juice for a brighter citrus flavor.
Blueberry Cream Cheese Loaf
Add small spoonfuls of sweetened cream cheese to the batter before baking for a cheesecake-inspired variation.
Blueberry Almond Loaf
Add 1/2 teaspoon of almond extract and sprinkle sliced almonds over the top before baking.
Cinnamon Blueberry Loaf
Add 1/2 teaspoon of ground cinnamon to the dry ingredients for a warm, cozy flavor.
How to Store Blueberry Loaf Cake
Let the loaf cool completely before storing it in an airtight container. Keep it at room temperature for up to 2 days, or refrigerate it for up to 5 days.
For longer storage, wrap individual slices or the whole cooled loaf tightly and freeze for up to 3 months. Thaw at room temperature before serving.
Frequently Asked Questions
Can I use frozen blueberries?
Yes. Add them straight from the freezer and fold them into the batter gently. This helps prevent excess moisture and color bleeding.
Why did my blueberry loaf sink in the middle?
A loaf may sink if it is underbaked, if the batter is overmixed, or if the oven door is opened too early. Check the center carefully before removing it from the oven.
Can I make this recipe without lemon?
Absolutely. Lemon is optional. Leave it out for a classic blueberry loaf, or replace it with a little extra vanilla extract.
How do I know when the loaf is done?
The top should be golden, and a toothpick inserted into the center should come out clean or with a few moist crumbs. If wet batter remains on the toothpick, continue baking and check again after a few minutes.
Final Thoughts
This Moist Blueberry Loaf Cake is a simple homemade treat with a golden top, a soft interior, and plenty of juicy blueberries. Enjoy a slice with coffee or tea, serve it at brunch, or freeze a few portions for an easy sweet snack later.
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