Lemon blueberry muffins are a perfect blend of citrusy freshness and sweet, fruity flavor, making them an ideal breakfast or brunch option.

Here’s a comprehensive guide to creating these delightful muffins, incorporating tips and ingredients from various trusted sources.
Ingredients
To make these muffins, you will need the following ingredients:
For the Muffins:
- Granulated Sugar: ¾ to 1 cup (150-200g), depending on your desired sweetness level.
- Butter: ¼ to ½ cup (57-113g), either at room temperature or melted and cooled.
- Sour Cream or Yogurt: ½ to 1 cup (115-240ml), adding moisture and tenderness.
- Eggs: 1 to 2 large eggs, room temperature.
- Lemon Juice and Zest: 2-4 tablespoons of fresh lemon juice and 2-4 teaspoons of lemon zest, ensuring a robust lemon flavor.
- All-Purpose Flour: 1 ½ to 3 ½ cups (187.5-420g), properly measured using the fluff, spoon, and level method or by weight.
- Baking Powder and Salt: 2 teaspoons of baking powder and ½ teaspoon of salt.
- Milk: ½ to 1 cup (115-240ml) of whole milk or buttermilk.
- Blueberries: 2 cups (280g) of fresh blueberries, rinsed and dried.
For the Crumble Topping (Optional):
- All-Purpose Flour: ¼ to ½ cup (25-62.5g).
- Granulated Sugar: 3-6 tablespoons.
- Unsalted Butter: ¼ cup (57g) melted and cooled slightly.
- Lemon Zest: 1 tablespoon for added lemon flavor.
Instructions
Preparing the Muffin Batter:
- Preheat the Oven: Preheat your oven to 375°F (190°C) and line a 12-count muffin tin with liners.
- Mix Wet Ingredients: In a large mixing bowl, combine the sugar, butter, sour cream or yogurt, eggs, lemon juice, and lemon zest. Beat until creamy using a stand mixer or a handheld mixer.
- Prepare Dry Ingredients: In a separate bowl, whisk together the flour, baking powder, and salt].
- Combine Wet and Dry Ingredients: With the mixer on low, alternate between adding the flour mixture and the milk, beginning and ending with the flour mixture.
- Fold in Blueberries: Gently fold in the blueberries to avoid over-mixing and to keep them evenly distributed throughout the batter.

Adding the Crumble Topping (Optional):
- Prepare Crumble Mixture: Mix the flour, granulated sugar, and melted butter in a small bowl until crumbly. Add a pinch of kosher salt and some lemon zest for extra flavor.
- Top the Muffins: Evenly distribute the batter into the lined muffin cups. Sprinkle a liberal amount of the crumble topping over each muffin.
Baking the Muffins:
- Initial High Heat: If using a crumble topping, preheat the oven to 450°F (230°C) for the first 10 minutes to help the topping crisp up.
- Reduce Heat and Bake: After the initial 10 minutes, reduce the oven temperature to 375°F (190°C) and bake for an additional 8-10 minutes, or until a toothpick inserted into the center of a muffin comes out clean.
Tips for Perfect Muffins
- Ensure Room Temperature Ingredients: This helps in the creaming process and ensures the batter mixes smoothly.
- Don’t Overmix: Fold the ingredients gently to maintain the moisture and texture of the muffins.
- Use Fresh Ingredients: Fresh blueberries and real lemon juice and zest make a significant difference in the flavor and aroma of the muffins.
- Optional Glaze: For an extra touch, you can drizzle the cooled muffins with a lemon glaze made from confectioners’ sugar and fresh lemon juice.

Conclusion
Lemon blueberry muffins are a delightful treat that combines the brightness of lemon with the sweetness of blueberries. By following these steps and tips, you can create moist, flavorful, and visually appealing muffins that are perfect for any time of day. Whether you choose to add a crunchy crumble topping or a sweet lemon glaze, these muffins are sure to be a hit with family and friends.