Bring bakery-style goodness
This lemon blueberry streusel loaf cake bakes up moist and tender with a crunchy crumb top, ready in under an hour for breakfast or coffee.
A loaf cake lives or dies by two things: how moist the crumb stays and whether the top has any texture. This one gets both. Blueberries burst through a lemon-scented batter, and a buttery streusel lid keeps the surface from going flat and pale.
You need one bowl, one whisk, and a standard 9 by 5 inch loaf pan. No stand mixer, no creaming butter and sugar for ten minutes. Melted butter does the work.
If your last loaf cake came out dry at the edges and raw in the middle, the fix is usually oven temperature and pan size, not the recipe. Both are handled below.
About the Ingredients
1 3/4 cups (220g) all-purpose flour
Spoon it into the cup and level it off. Scooping straight from the bag packs in extra flour, which is the number one cause of a dry loaf. Bread flour works too, but the crumb gets a little chewier.
1 1/2 teaspoons baking powder
Check the date on the tin. Baking powder loses its lift after about six months, and there is no way to tell by looking. If yours is old, add an extra half teaspoon.
1/2 teaspoon fine salt
Fine table salt, not flaky sea salt. If you only have kosher salt, use a slightly heaped half teaspoon.
1 cup (200g) granulated sugar
You can drop this to 3/4 cup if your blueberries are very sweet. Light brown sugar works and gives a softer, slightly caramel edge.
2 large eggs, room temperature
Cold eggs seize up the melted butter and make the batter look curdled. Set them in warm water for five minutes if you forgot to take them out.
3/4 cup (180ml) whole milk
Whole milk gives the best crumb. Buttermilk or plain yogurt thinned with a splash of milk both work and add a little tang.
1/2 cup (113g) unsalted butter, melted and cooled
Cool it for ten minutes before it hits the eggs. Hot butter cooks them. Salted butter is fine, just skip the added salt above.
Zest of 2 lemons plus 2 tablespoons juice
Zest the lemons before you juice them, and only take the yellow part. The white pith underneath is bitter. Bottled juice works in a pinch but the zest is not optional.
1 1/2 cups (225g) fresh blueberries
Frozen berries work, but do not thaw them. Toss them in a tablespoon of flour straight from the freezer so they stay whole and do not streak the batter grey.
Streusel: 1/2 cup (60g) flour, 1/3 cup (67g) brown sugar, 1/2 teaspoon cinnamon, 4 tablespoons cold butter, cubed
Cold butter is the whole point. Warm butter melts into the flour and you get paste instead of crumbs. Freeze the butter for ten minutes if your kitchen is hot.
Frequently Asked Questions
Q: Why did my blueberries sink to the bottom?
The batter was too thin or the berries were wet. Toss them in a tablespoon of flour first, and make sure fresh berries are dry after rinsing. Frozen berries should go in straight from the freezer, never thawed.
Q: Can I use frozen blueberries in a loaf cake?
Yes, and they work well if you keep them frozen until the last second. Fold them in with two or three turns so they do not bleed, and add two extra minutes to the bake time. Expect a slightly softer crumb where the berries sat.
Q: How do I know when a loaf cake is done?
A toothpick in the center should come out with a few moist crumbs, not wet batter. For a firmer read, an instant-read thermometer in the middle should hit 200F (93C). The top should spring back when you press it lightly.
Q: Why is my loaf cake dry?
Too much flour is the usual culprit, followed by overbaking. Spoon flour into the measuring cup and level it rather than scooping from the bag. Pull the loaf the moment the toothpick shows moist crumbs.
Q: Can I make this loaf cake without a stand mixer?
You do not need one at all. A bowl and a whisk handle this batter, since the butter is melted rather than creamed. A spatula does the folding once the flour goes in.
Step-by-Step Instructions
1. Heat the oven and prep the pan
Set a rack in the middle and heat the oven to 350F (175C). Grease a 9 by 5 inch loaf pan and line it with a strip of parchment that hangs over the long sides. The overhang is your handle later.
2. Make the streusel first
Rub the cold cubed butter into the flour, brown sugar, and cinnamon with your fingertips until you get clumps the size of peas. Put the bowl in the fridge while you make the batter. Cold streusel stays on top instead of melting in.
3. Rub the zest into the sugar
In a large bowl, rub the lemon zest into the granulated sugar until it smells strongly of lemon and looks like wet sand. This takes about 30 seconds with your fingers.
4. Whisk the wet ingredients
Whisk in the eggs, milk, melted butter, and lemon juice until smooth. The mixture will look slightly curdled if the milk is cold. That is fine and it will come together with the flour.
5. Fold in the dry ingredients
Add the flour, baking powder, and salt. Fold with a spatula just until the last dry streak disappears, about 12 to 15 strokes. Stop there.
6. Add the blueberries
Toss the berries with a tablespoon of flour in a small bowl, then fold them in with two or three turns. Scrape the batter into the pan and smooth the top.
7. Top and bake
Scatter the cold streusel over the batter in an even layer, squeezing a few clumps as you go. Bake 50 to 60 minutes, until the center springs back and a toothpick comes out with a few moist crumbs. Tent with foil at 40 minutes if the top is browning fast.
8. Cool before slicing
Cool in the pan for 15 minutes, then lift the loaf out by the parchment and set it on a rack. Slice warm or wait until it is fully cool. A serrated knife cuts cleanest through the streusel.
Delicious Variations
Cinnamon Crumb Swirl
Swap the lemon zest and juice for a tablespoon of vanilla, and add a middle layer of cinnamon sugar between two halves of the batter.
Raspberry Almond
Use raspberries instead of blueberries and add half a teaspoon of almond extract. Scatter sliced almonds over the streusel before baking.
Chocolate Loaf
Drop the lemon and berries, add 1/3 cup cocoa powder with the flour, and stir in 3/4 cup chocolate chips. Add two extra tablespoons of milk to loosen the batter.
How to Store Bring bakery-style goodness
Refrigerator
Wrap the cooled loaf in plastic, then foil, and keep it at room temperature for up to 3 days. Fridge works too, up to 5 days, but bring slices to room temperature before eating.
Freezer
Wrap the whole loaf or individual slices in plastic, then foil, and freeze up to 2 months. Thaw slices at room temperature for about an hour.
Reheating
A slice in the microwave for 15 seconds is enough to soften it. Ten minutes in a 300F (150C) oven brings the streusel back to crisp.
Bake it once and you will know your oven's real timing for a loaf this size, which is worth more than any recipe note. Write the minutes on the recipe card. Dinner's done. Go put your feet up.
Bring bakery-style goodness Recipe
This lemon blueberry streusel loaf cake bakes up moist and tender with a crunchy crumb top, ready in under an hour for breakfast or coffee.
🧂 Ingredients
- 1 3/4 cups (220g) all-purpose flour
- 1 1/2 teaspoons baking powder
- 1/2 teaspoon fine salt
- 1 cup (200g) granulated sugar
- 2 large eggs, room temperature
- 3/4 cup (180ml) whole milk
- 1/2 cup (113g) unsalted butter, melted and cooled
- Zest of 2 lemons plus 2 tablespoons juice
- 1 1/2 cups (225g) fresh blueberries
- Streusel: 1/2 cup (60g) flour, 1/3 cup (67g) brown sugar, 1/2 teaspoon cinnamon, 4 tablespoons cold butter, cubed
📋 Instructions
- 1Heat the oven and prep the pan — Set a rack in the middle and heat the oven to 350F (175C). Grease a 9 by 5 inch loaf pan and line it with a strip of parchment that hangs over the long sides. The overhang is your handle later.
- 2Make the streusel first — Rub the cold cubed butter into the flour, brown sugar, and cinnamon with your fingertips until you get clumps the size of peas. Put the bowl in the fridge while you make the batter. Cold streusel stays on top instead of melting in.
- 3Rub the zest into the sugar — In a large bowl, rub the lemon zest into the granulated sugar until it smells strongly of lemon and looks like wet sand. This takes about 30 seconds with your fingers.
- 4Whisk the wet ingredients — Whisk in the eggs, milk, melted butter, and lemon juice until smooth. The mixture will look slightly curdled if the milk is cold. That is fine and it will come together with the flour.
- 5Fold in the dry ingredients — Add the flour, baking powder, and salt. Fold with a spatula just until the last dry streak disappears, about 12 to 15 strokes. Stop there.
- 6Add the blueberries — Toss the berries with a tablespoon of flour in a small bowl, then fold them in with two or three turns. Scrape the batter into the pan and smooth the top.
- 7Top and bake — Scatter the cold streusel over the batter in an even layer, squeezing a few clumps as you go. Bake 50 to 60 minutes, until the center springs back and a toothpick comes out with a few moist crumbs. Tent with foil at 40 minutes if the top is browning fast.
- 8Cool before slicing — Cool in the pan for 15 minutes, then lift the loaf out by the parchment and set it on a rack. Slice warm or wait until it is fully cool. A serrated knife cuts cleanest through the streusel.
