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Bakery-style blueberry chocolate chip muffins with streusel topping sitting on a wire rack feature photo.

Blueberry Chocolate Chip Muffins

Soft bakery-style Blueberry Chocolate Chip Muffins studded with fresh juicy blueberries, mini chocolate chips and a streusel topping!
5 from 2 votes
Prep Time 15 minutes
Cook Time 21 minutes
Rest Time 1 hour
Total Time 1 hour 36 minutes
Course Breakfast, Dessert, Snack
Cuisine American
Yields 9 to 10 Muffins

INGREDIENTS

Blueberry Chocolate Chip Muffins

  • 1 ¾ Cups (210g) All-Purpose Flour
  • ¾ Cup + 2 Tablespoons (175g) Granulated White Sugar
  • 2 ½ Teaspoons Baking Powder
  • ¼ Teaspoon Baking Soda
  • ½ Teaspoon Cinnamon (optional)
  • ½ Teaspoon Fine Sea Salt
  • ¼ Cups (56g) Unsalted Butter melted
  • ¼ Cup (50g) Neutral Oil (like avocado, canola or vegetable oil)
  • 2 Whole Large Eggs room temp
  • ½ Cup (113g) Full-Fat Sour Cream room temp
  • ½ Cup (113g) Buttermilk (I used 2%) room temp
  • 2 Teaspoons Vanilla Extract
  • 1 ¼ Cups (180g) Fresh Blueberries, tossed with 1 tablespoon of flour
  • Cup (118g) Mini Chocolate Chips

Streusel Topping (Optional)

  • 6 Tablespoons (45g) All-Purpose Flour
  • 3 Tablespoons (37g) Granulated White Sugar
  • 2 Tablespoons (28g) Unsalted Butter cold is fine

Instructions
 

  • Combine Dry Ingredients - In a medium sized bowl, combine all-purpose flour, sugar, baking powder, cinnamon and salt. Set aside.
    1 ¾ Cups (210g) All-Purpose Flour
    ¾ Cup + 2 Tablespoons (175g) Granulated White Sugar
    2 ½ Teaspoons Baking Powder
    ¼ Teaspoon Baking Soda
    ½ Teaspoon Cinnamon (optional)
    ½ Teaspoon Fine Sea Salt
  • Combine Wet Ingredients - In a large mixing bowl, whisk together melted butter, oil, eggs, sour cream, buttermilk and vanilla until well combined.
    ¼ Cups (56g) Unsalted Butter
    ¼ Cup (50g) Neutral Oil (like avocado, canola or vegetable oil)
    2 Whole Large Eggs
    ½ Cup (113g) Full-Fat Sour Cream
    ½ Cup (113g) Buttermilk (I used 2%)
    2 Teaspoons Vanilla Extract
  • Combine Dry & Wet Ingredients - Sift the dry ingredients into the wet ingredients and combine until there are few flour streaks left. Do not overmix.
  • Add Blueberries & Chocolate Chips - In a small bowl, combine blueberries and 1 tablespoon of flour. Then gently fold in the blueberries (with all the flour) and chocolate chips, until just combined.
    1 ¼ Cups (180g) Fresh Blueberries, tossed with 1 tablespoon of flour
    ⅔ Cup (118g) Mini Chocolate Chips
  • Rest Batter - Cover with a kitchen towel and rest on the counter for 1 hour.
  • Make Streusel - In a small bowl, combine flour and sugar. Add the butter, then using your finger tips, work the butter into the mixture until crumbs form.
    6 Tablespoons (45g) All-Purpose Flour
    3 Tablespoons (37g) Granulated White Sugar
    2 Tablespoons (28g) Unsalted Butter
  • Preheat Oven - With 15 minutes left of resting the batter, position a rack in the center of the oven and set it to 400ºF (205ºC).
    Line a 12-count muffin pan with 6 muffin liners, alternating every other well.
  • Scoop & Fill - Scoop and fill each liner with batter, overfilling so it sits above the liner. Then top with 1 to 2 tablespoons of streusel.
    Keep the remaining batter on the counter to bake later.
  • Bake - Bake muffins at 400ºF (205ºC) for 5 minutes and then lower the temperature to 350ºF/180ºC (without opening the oven door) and continue baking for 15 to 18 minutes. They are ready when a toothpick inserted in the center comes out with very few moist crumbs.
  • Cool - Keep muffins in the pan for 5 to 10 minutes and then transfer to a wire rack to cool. You may need to use a small knife to release the muffins from the pan, as some of the blueberries may stick.
  • Continue Baking - Increase the oven temperature back up to 400ºF (205ºC)  and continue baking off the remaining batter. You should be able to bake off 3 or 4 more muffins. Enjoy!

Notes

Timing - Doneness will depend on the size of your muffins. If you're making smaller ones, check at the 11 minute mark after you've reduce the oven temperature. If you're overfilling them like I did, check after the 14 minute mark.
Keyword blueberry chocolate chip muffin, buttermilk muffins, chocolate chip blueberry muffins, chocolate chips, fresh blueberries, homemade muffins, mini chocolate chips, muffin recipes, sour cream muffins
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