Blueberry crumble muffins feel just right for the beginning of summer, when fresh blueberries start showing up more often and simple baking feels a little brighter. They have the comfort of a soft homemade muffin, but the crumb topping makes them feel a bit more special without adding much extra work. The blueberries bake into little pockets of sweetness, while the crumble gives the tops a golden, buttery finish.

They are easy enough for a quiet morning but still pretty enough to share with coffee, brunch, or an afternoon snack. The batter comes together simply, and the topping adds that cozy bakery-style texture that makes each muffin feel warm and inviting.

Soft, buttery, and finished with a delicate crunch

When they come out of the oven, the tops have little crisp edges from the crumb topping, while the inside stays delicate and tender. The blueberries melt slightly into the batter, leaving sweet purple streaks and little pockets of fruit throughout. Each bite has a nice mix of buttery topping, light muffin crumb, and bright fruit without feeling too rich.

They are especially good split open while still fresh, when the steam rises a little and the crumb pulls apart easily. The flavor is simple and familiar, but the texture makes them feel like more than a plain muffin. It is the kind of bake that feels easy to reach for in the morning, but still nice enough to set out with coffee or tea.

Ingredients

🫐 This measurement makes 12 muffins.

For the blueberry muffins

• 250 g all-purpose flour
• 150 g granulated sugar
• 2 teaspoons baking powder
• ½ teaspoon salt
• 2 large eggs
• 120 ml milk
• 120 g sour cream or plain Greek yogurt
• 85 g unsalted butter, melted and slightly cooled
• 1 teaspoon vanilla extract
• 180 g fresh blueberries

For the crumble topping

• 70 g all-purpose flour
• 55 g brown sugar
• 20 g granulated sugar
• ½ teaspoon cinnamon
• Pinch of salt
• 55 g unsalted butter, softened

Instructions

1. Make the crumble topping:
   In a small bowl, mix the flour, light brown sugar, granulated sugar, cinnamon, and salt. Add the softened butter and rub it in with your fingers or a fork until chunky crumbs form. Set aside.
2. Prepare the muffin pan and oven:
   Preheat the oven to 200°C / 400°F. Line a 12-cup muffin pan with paper liners.
3. Mix the dry ingredients:
   In a large bowl, whisk together the flour, sugar, baking powder, and salt until evenly combined.
4. Mix the wet ingredients:
   In a separate bowl, whisk the eggs, milk, sour cream or plain Greek yogurt, melted butter, and vanilla until smooth.
5. Combine the batter gently:
   Pour the wet ingredients into the dry ingredients and fold just until no dry flour streaks remain. Do not overmix.
6. Fold in the blueberries:
   Gently fold in the blueberries, being careful not to crush them.
7. Fill the muffin cups:
   Divide the batter evenly between the muffin cups, filling each one close to the top.
8. Add the crumble topping:
   Sprinkle the crumble generously over each muffin, keeping some larger chunks for texture.
9. Bake the muffins:
   Bake for 5 minutes at 200°C / 400°F, then reduce the oven temperature to 180°C / 350°F and bake for 13–16 minutes more, or until the tops are golden and a toothpick inserted into the center comes out clean.
10. Cool before serving:
    Let the muffins cool in the pan for 5 minutes, then transfer them to a wire rack. Serve slightly warm or at room temperature.

Why Metric?

For clarity and consistency, I use metric measurements in my recipes. It's more accurate (especially for baking), easier to scale up or down, and ensures better results — no guessing whether your "cup" is packed or level. But don’t worry, US equivalents are included below so you can bake with whatever you have on hand.

For the Muffins

For the Crumble Topping

Storage

• Store cooled muffins in an airtight container at room temperature for 2 days.
• Refrigerate for up to 4 days if you want them to last longer.
• Rewarm briefly before serving to soften the crumb and refresh the crumble topping.
• Freeze muffins in a freezer-safe bag or container for up to 2 months.

Note

• Sour cream or plain Greek yogurt helps the muffins stay moist and tender. The slight acidity also gives the crumb a softer texture and a richer flavor.
• Do not overmix the batter once the wet and dry ingredients are combined. Overmixing can make the muffins dense.
• Use fresh blueberries for the best texture, but frozen blueberries can be used without thawing. The batter may streak slightly purple.
• Keep the crumble in chunky pieces so the topping bakes with texture instead of melting flat.

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Thank you for being here as I start this journey. I can’t wait to share more recipes, tips, and stories with you — one crumb at a time.

Stay tuned,
~ Clever Crumbs