Blueberry Kefir Bread is a tangy, one-bowl quick bread loaded with fresh blueberries and made with kefir for subtle sourness and moisture. It's an effortless breakfast or brunch loaf that comes together in minutes.
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Instructions
1
Preheat the oven to 375 degrees. Grease a loaf pan with butter or cooking spray. Set that aside.
2
Mix 1 tablespoon of flour into the blueberries. This will keep them from sinking to the bottom of the batter.
3
Add the sugar and melted butter to a bowl. Mix well until fully combined.
4
Add the eggs, vanilla extract, and kefir to the bowl. Mix again until fully combined.
5
Add the flour and baking powder to the bowl. Mix until fully combined but do not overmix.
6
Fold in the blueberries.
7
Pour the batter into the loaf pan and bake for 55 minutes or until a toothpick is inserted and comes out clean.
8
Cool the loaf on a wire rack.
9
To make the icing, add 1 cup of powdered sugar to a bowl. Add 2 tablespoons of blueberry kefir and mix until the desired consistency is reached. If you would like to icing thicker, add more powdered sugar. To thin out the icing, add more blueberry kefir.
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Tips & Notes
Pro tips
Toss blueberries lightly in a small amount of flour before folding in to help distribute them evenly and prevent them from sinking to the bottom.
Mix the batter just until combined—do not overmix. Overmixing develops gluten and results in a dense, tough loaf.
Let the batter rest for 2–3 minutes after mixing to allow the baking powder to activate before pouring into the loaf pan.
If using a dark or nonstick loaf pan, reduce oven temperature by 25°F to prevent overbrowning on the sides and bottom.
Substitutions
Blueberry Kefir → Plain kefir or buttermilk (use equal amount; flavor will be less fruity)
All Purpose Flour → Whole wheat flour (substitute up to 1 cup; may add 2–3 minutes to baking time and create denser texture)
Butter → Vegetable oil or coconut oil (use equal amount for similar moisture)
Fresh or Frozen Blueberries → Blackberries or raspberries (same quantity; slight flavor variation)
Storage & make-ahead
Store covered at room temperature for up to 3 days, or wrap and freeze for up to 3 months. Thaw at room temperature or reheat gently in a 300°F oven for 10–15 minutes.
Common Questions
Can I use frozen blueberries instead of fresh?
Yes, frozen blueberries work well. Use them straight from the freezer without thawing to prevent excess moisture and color bleeding into the batter.
What is kefir and can I substitute it?
Kefir is a tangy fermented dairy drink. You can substitute it with buttermilk or plain yogurt mixed with a little milk in a 1:1 ratio for similar results.
How do I know when the bread is done baking?
Bake until a toothpick inserted in the center comes out clean or with just a few moist crumbs. The top should be golden brown, typically 50–60 minutes.
Can I make this recipe dairy-free?
Substitute blueberry kefir with a non-dairy kefir alternative, and use melted coconut oil or dairy-free butter instead of regular butter.
How should I store leftover bread?
Keep it wrapped in plastic wrap or in an airtight container at room temperature for up to 3 days, or freeze for up to 3 months.