If you are a fan of blueberry fritters you will enjoy this recipe without needing a pot of hot oil. The browned butter gives a rich depth of flavor while sour cream keeps the crumb incredibly moist. A layer of homemade blueberry filling runs through the center of the loaf, creating pockets of jammy blueberries. Whether you enjoy a slice with a hot cup of coffee for breakfast or as an afternoon snack, this recipe is the perfect way to celebrate blueberry season.
Browning the butter is one of the easiest ways to add incredible flavor to baked goods. As the milk solids toast, they develop a rich caramel like flavor that gives this loaf a nutty richness.
Granulated sugar sweetens the loaf while helping create a tender crumb.
Room temperature eggs provide structure and stability while helping create a soft, fluffy texture. They also help emulsify the batter for a smooth and even crumb.
Vanilla enhances the flavor of both the brown butter and blueberries. Vanilla bean paste adds beautiful specks throughout the loaf and gives it a more pronounced bakery-style flavor. I especially wouldn't skip it in the glaze.
Milk adds moisture and helps create a smooth batter. It also contributes to the tender texture of the finished loaf.
Sour cream keeps the loaf incredibly moist while adding a subtle tang that balances the sweetness of the blueberries and glaze.
All-purpose flour provides the structure for this loaf while still allowing it to remain soft and tender. Be sure to spoon and level your flour or use a kitchen scale for the most accurate measurement.
Baking powder helps the loaf rise and creates a light, fluffy crumb. It works alongside the baking soda to give the loaf its bakery-style height.
Salt balances the sweetness and enhances the flavors of the brown butter, vanilla, and blueberries.
Fresh blueberries when cooked down to a thick compote creates a beautiful and easy filling.
A touch of lemon juice brightens the blueberry flavor and prevents the filling from tasting flat or overly sweet and the zest adds freshness.
Cornstarch thickens the blueberry filling and helps create those beautiful ribbons of fruit throughout the loaf. Without it, the filling can become too loose and disappear into the batter.
A small amount of cinnamon adds warmth and gives the loaf its classic fritter flavor. It complements the blueberries without overpowering them. I don't use as much as I do in my peach or apple fritter cake loaf.
Powdered sugar creates a smooth, silky glaze that sets beautifully over the cooled loaf.
Milk or cream thins the glaze to the perfect drizzling consistency. Heavy cream will create a richer glaze while milk keeps it lighter.
In a medium saucepan over medium heat, combine the blueberries, butter, brown sugar, lemon juice and lemon zest. Cook for 5-7 minutes until the berries begin to burst and release their juices. In a small bowl, whisk together the cornstarch and water. Stir the slurry into the blueberry mixture and continue cooking until thickened. The filling should resemble a homemade blueberry compote and hold its shape when dragged with a spoon. Remove saucepan from the heat and stir in vanilla. Reserve 1 tablespoon of the mixture for the glaze and allow the remaining filling to cool completely.
Place the butter in a light colored saucepan over medium heat. Cook until the butter foams and milk solids form on the bottom. Continue cooking until those solids become golden brown and smell nutty. Transfer to a heatproof mixing bowl and cool for 10 minutes.
Preheat the oven to 350°F. Mix the cinnamon sugar mixture in a small bowl and set aside. Line a 9x5-inch loaf pan with parchment paper and lightly grease. In a large bowl, whisk together the brown butter and sugar. Add the eggs, vanilla extract, milk, and sour cream. Mix until smooth. In a separate bowl, whisk together the flour, baking powder, baking soda, and salt. Add the dry ingredients to the wet ingredients and fold gently with a silicone spatula until no streaks of flour remain. Avoid overmixing.
Combine the brown sugar, cinnamon, and salt in a small bowl. Spread half of the batter into the prepared loaf pan. Dollop half of the blueberry filling over the batter and sprinkle with half of the cinnamon sugar mixture. Add the rest of the batter, followed by the remaining blueberry filling and cinnamon sugar. Use a butter knife to create a few gentle swirls through the center of the loaf.
Bake for 55-65 minutes. Keep a close eye on the loaf during the final 15 minutes and loosely tent with foil if needed. The loaf is done when a toothpick inserted into the center comes out with moist crumbs. Allow the loaf to cool in the pan for 20 minutes before transferring to a wire rack.
Whisk together the powdered sugar, milk, vanilla bean paste, reserved blueberry filling, and salt until smooth. Drizzle the sweet vanilla glaze generously over the cooled loaf.
Room temperature eggs and sour cream create a smoother batter and help the loaf bake evenly.
The brown butter transforms this from a standard blueberry bread recipe into something special. Those toasted milk solids create a rich, bakery-style flavor that pairs beautifully with the blueberries.
Allow the blueberry filling to cool before layering. Warm filling can sink and affect the final texture.
For best results, spoon the flour into your measuring cup and level it off with a knife. Too much flour can create a dry loaf.
Store leftovers in an airtight container at room temperature for up to 3 days.
For longer storage, refrigerate for up to 5 days.
You can also freeze individual slices for up to 2 months.
Yes. Frozen blueberries work well in this recipe. Add them directly to the saucepan without thawing.
It falls somewhere between a coffee cake and a quick bread. The moist vanilla cake texture and cinnamon sugar swirl resemble coffee cake, while the loaf form makes it easy to slice like a quick bread.
Absolutely. The loaf is delicious on its own, though the blueberry vanilla bean glaze adds extra flavor and visual appeal.
You want a golden color, not burnt, like toasted hazelnut, not coffee ash.
Measuring flour properly makes a big difference in how your baked recipes turn out. For best results, use a kitchen scale and measure in grams. This ensures consistency and prevents adding too much flour, which can make this cake dry or dense.
If you don’t have a kitchen scale:
Too much flour is one of the most common reasons baked recipes can become dry and cakey
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