Lemon Blueberry Loaf with Crumble Topping

A soft, tangy loaf bursting with blueberries, topped with a buttery crumble—this Lemon Blueberry Loaf is the perfect balance of zesty brightness and cozy sweetness. Made in a single bowl, baked in a loaf pan, and crowned with a golden crumble crust—no mixer needed.

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The Ultimate Lemon Blueberry Cake in a Loaf Pan Recipe features a delightful blend of ingredients that harmoniously create an undeniably scrumptious cake. From the rich butter to the tangy cream cheese, each component contributes to the overall decadence of this dessert.

The irresistible crumble topping adds a delightful crunch and complements the soft, moist texture of the cake. Additionally, the crumble adds visual appeal to the cake. Once baked, it forms a golden brown crust that not only looks inviting but also adds an enticing aroma to the kitchen. Each slice becomes a work of art, with the crumble scattering across the top, tempting you to dig in.

Why This Is the Best Lemon Blueberry Loaf

• One bowl. One pan. Simple prep, minimal dishes.
• Buttery crumble finish gives it a bakery-style crunch.
• Moist crumb from sour cream ensures a soft texture every time.
• Bright citrus kick with lemon juice and zest enhances the berry flavor.

Ingredients and substitutes

• All-Purpose Flour – This forms the base of the cake, giving it structure. You can substitute with cake flour for a more delicate crumb, but avoid self-raising flour since the leavening agents will throw off the balance.
• Baking Powder and Baking Soda – These work together to give the loaf its lift. The baking soda reacts with the lemon juice and sour cream for that soft, airy texture. Don’t skip either, or your loaf may turn out dense.
• Sugar – I use plain white granulated sugar, but you can use light brown sugar for a deeper flavor. Note that brown sugar may make the crumb a bit more moist and slightly darker in color.
• Eggs – These bind the batter and help with the rise. Use large eggs at room temperature. If you’re out of eggs, ¼ cup of applesauce or 1 mashed banana per egg can work in a pinch, but the loaf texture may be softer and less rich.
• Neutral Oil – A light-tasting oil like canola, sunflower, or vegetable oil helps keep the crumb moist and tender. You can use melted butter instead for added richness, but the texture will be slightly denser.
• Sour Cream – This is the secret to that soft, moist texture and subtle tang. You can substitute with full-fat Greek yogurt or buttermilk. Avoid low-fat options—they can result in a dry crumb.
• Vanilla Extract – Adds warmth and enhances all the other flavors. Use pure vanilla extract for the best taste—imitation works in a pinch, but won’t be as aromatic.
• Lemon Juice and Zest – Together, they bring brightness and balance to the loaf. Always use fresh lemon juice for maximum flavor. Bottled juice lacks the acidity and punch of fresh.
• Blueberries – Fresh blueberries are best, but frozen ones work too. Just make sure to toss them in a bit of flour before adding to the batter to prevent sinking. Avoid overmixing to keep them whole.
• Crumble Topping (Flour, Sugar, Butter) – A simple mix of cold butter, sugar, and flour creates a bakery-style topping. You can add rolled oats or chopped nuts for texture, or skip the crumble entirely for a simpler finish.

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Step-by-step – Lemon blueberry cake

• Prep & crumble: Preheat oven to 175 °C / 350 °F. Grease a 9×5″ loaf pan. In a small bowl, rub cold butter into flour, sugar, and salt until pea‑sized crumbs form. Refrigerate.

• Combine wet ingredients: In a large bowl, whisk sugar, eggs, oil, sour cream, vanilla, lemon zest, and juice until smooth.
• Add dry ingredients: Stir in flour, baking powder, soda, and salt just until combined.
• Fold in blueberries: Gently fold in berries—reserve a few for topping.
• Fill the loaf pan: Spread batter into the pan, top with reserved blueberries, then sprinkle crumble on top.

• Bake: 45–55 minutes, or until a skewer comes out clean. If crumble browns too quickly, tent with foil at 40 minutes.
• Cool & serve: Cool 10 minutes in the pan, then remove. Serve warm or at room temperature, dusted with powdered sugar.

Tips for Success

• Use room-temperature sour cream and eggs for an even batter.
• Toss blueberries in flour to prevent sinking.
• Refrigerate the crumble until it crisps beautifully.
• Let loaf cool partially before slicing—warm loaf with a fine cable crumb makes the best presentation.

• Best Blueberry Pie Filling at Home
• Lemon Blueberry Cupcakes
• Blueberry Cream Cheese Tartlets
• Easy Blueberry Crumble
• Blueberry Cheesecake – Baked

Frequently asked questions

• Cranberry pound cake
• Fresh peach cake with crumble
• Classic Vanilla Bundt Cake
• Cinnamon coffee cake

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