The BEST Jumbo Blueberry Muffins

I made these blueberry muffins yesterday and they were the perfect combination of crispy on top and fluffy inside. The sour cream is the key ingredient to keep them moist! I am playing with baking time, will update once I have this finalized. Until then, just watch them towards the end.


  • 3 cups all-purpose flour 
  • 3 teaspoons baking powder
  • 1/4 teaspoon baking soda
  • 1/2 teaspoon ground cinnamon 
  • 1/2 teaspoon salt
  • 1/3 cup (5 Tbsp) unsalted butter, melted & cooled slightly
  • 1/3 cup vegetable, canola or coconut oil
  • 1 cup granulated sugar
  • eggs, (room temp if possible)
  • 1/3 cup sour cream, (room temp if possible)
  • 1 cup milk, dairy or non-dairy (room temp if possible)
  • 1 teaspoon vanilla extract
  • 2 cups fresh or frozen blueberries (do not thaw)
  • Turbinado sugar for sprinkling


  1. Preheat oven to 400°F. Line a 12-count muffin pan with muffin liners (or grease with nonstick spray).
  2. Whisk together flour, baking powder, baking soda, salt, and cinnamon in a large bowl. Set aside.
  3. Whisk the melted butter, oil, sugar, and eggs together until combined. Add in the sour cream, milk, and vanilla.
  4. Pour wet ingredients into dry ingredients and fold together with a rubber spatula until completely combined (using a whisk as needed to smooth any large lumps of flour). Try to avoid over-mixing.
  5. Fold in the blueberries.
  6. Divide batter between each muffin cup (they will be large muffins). Sprinkle with turbinado sugar.
  7. Bake at 400°F for 17-23 minutes, or until the tops are lightly golden brown and centers are set. Test by sticking a toothpick in the center of a and if it comes out clean, the muffins are done!
  8. Allow to cool for 5-10 minutes in pan before serving.
  9. Cover leftover muffins and store at room temperature for 5 days or in the refrigerator for 1 week (or you can freeze them for up to 3 months, but we always eat them too quickly to do this)!

Note, you can use another muffin tin and make 15-16 regular size muffins if preferred.


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