Blueberry Muffins with Crumble

These blueberry muffins are a delightful treat, bursting with juicy blueberries and topped with a sweet and crunchy crumble topping. The addition of sour cream in the batter adds a rich, moist texture, making each bite incredibly satisfying. Perfect for breakfast or as a snack, these muffins will surely be a hit with friends and family.

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When I worked as a flight attendant and lived in hotels all over the world, breakfast was always a highlight of my day. I’d scan the buffet for muffins, with blueberry and raspberry being my absolute favorites. There was something comforting about the familiar taste of a muffin, no matter where I was in the world.

After leaving my career to become a mom, I started making blueberry muffins at home, and it felt so special to share them with my kids. They loved them just as much as I did, and baking them together became one of our favorite weekend traditions.

Why is this the best blueberry muffin recipe?

• Moist and Tender Texture: The use of sour cream in place of milk adds moisture, resulting in a tender crumb that’s not dry or dense.
• Generous Amount of Blueberries: The recipe calls for a generous amount of blueberries, ensuring that each bite is filled with juicy bursts of fruit flavor.
• Crumble Topping: The crumble topping adds a delightful crunchy texture and an extra layer of sweetness, elevating the muffins from ordinary to extraordinary.
• Easy to Make: The recipe is simple and straightforward, making it easy for even novice bakers to achieve delicious results.

Ingredients and substitutes

• All-purpose flour: Provides structure to the muffins. You can also use whole wheat flour for a healthier option, but the texture may be denser.
• Granulated sugar: Adds sweetness and helps to tenderize the muffins. You can also use brown sugar for a slightly different flavor, or a sugar substitute for a lower-sugar option.
• Leavening: Baking powder and baking soda act as leavening agents to help the muffins rise. A mixture of baking soda and cream of tartar can be used if baking powder is unavailable
• Unsalted butter: Adds moisture and flavor to the muffins. You can also use salted butter, but reduce the added salt in the recipe. Vegetable oil can also be used as a substitute.
• Eggs: Bind the ingredients together and add structure to the muffins. A flax or chia seed “egg” (1 tablespoon ground flaxseed or chia seeds mixed with 3 tablespoons water, let sit for 5 minutes to thicken) can be used for each egg for a vegan option.
• Sour cream: Makes for a richer, more tender crumb in your muffins. The sour cream adds moisture and a slightly tangy flavor that complements the blueberries’ sweetness. Greek yogurt or buttermilk is also a great substitute.
• Blueberries: Add sweetness and bursts of flavor to the muffins. Other berries, such as raspberries or blackberries, can be used, or dried fruits like cranberries or raisins.
• Crumble topping (flour, sugar, butter): Adds a crunchy, sweet topping to the muffins. Oats, nuts, or seeds can be added to the crumble for texture. Brown sugar or a sugar substitute can be used for a different flavor.

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Step by step: Blueberry muffins

• Prep – Preheat your oven to 400°F /200°C/ Gas mark 6 and line a 12-cup muffin tin with paper liners or grease it with cooking spray.

• Crumble topping – Mix the flour and sugar for the crumble topping in a small bowl. Add the melted butter and stir until the mixture resembles coarse crumbs. Set in the fridge to keep chilled.
• Dry ingredients – Whisk together the flour, baking powder, baking soda, and salt in a large bowl.
• Wet ingredients – In another bowl, cream the softened butter and sugar until light and airy. Add the eggs one at a time, followed by the vanilla extract, until well combined.
• Dry to wet – Add the flour mixture along with the sour cream. Fold in the blueberries gently, making sure not to overmix or break them.

• Divide – Fill each muffin cup about two-thirds full with the batter. Sprinkle the crumble topping over each muffin.

• Bake for 7 to 8 minutes at high temperature, then reduce the oven to 375°F /190°C/ Gas mark 5 and bake for another 10 to 15 minutes until a toothpick inserted into the center of a muffin comes out clean.
  Pro tip– The size of the muffins will determine the time needed to bake them.
• Cool – Allow the muffins to cool in the tin for 5 minutes, then transfer them to a wire rack to cool completely.

Tips for Success

• Use Fresh Blueberries: Fresh blueberries will give your muffins the best flavor and texture. If using frozen blueberries, do not thaw them before adding to the batter to prevent the color from bleeding.
• Don’t Overmix the Batter: Overmixing can lead to tough muffins. Mix the batter until the ingredients are just combined.
• Fill Muffin Cups Properly: Fill each muffin cup about two-thirds full to ensure the muffins bake evenly and rise properly.
• Make a Generous Crumble Topping: Don’t skimp on the crumble topping. A generous amount adds flavor and texture to the muffins.
• Use Room Temperature Ingredients: Allow ingredients like eggs, butter, and sour cream to come to room temperature before using. This helps them mix more evenly into the batter.
• Preheat Your Oven: Make sure your oven is fully preheated before baking the muffins to ensure even baking.
• Cool Muffins Properly: Allow the muffins to cool in the pan for 5-10 minutes before transferring them to a wire rack to cool completely.
• Store Muffins Correctly: Store leftover muffins in an airtight container at room temperature for up to 3 days, or freeze them for longer storage. Reheat in the microwave or oven before serving.

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