Lemon Blueberry Cupcakes

These Lemon Blueberry Cupcakes are soft, moist, and filled with juicy blueberries and plenty of fresh lemon flavor. Sour cream keeps the crumb tender, while fresh lemon zest and juice give the cupcakes a bright citrus flavor without needing lemon extract.

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I recently remade these cupcakes using the same batter as my Lemon Blueberry Bundt Cake, scaled down for a batch of cupcakes. And I much prefer this version because the blueberries are baked right into the cupcakes, so you get fresh berries and lemon in every bite.

I start by rubbing fresh lemon zest into the sugar before creaming it with the butter. It’s a simple step, but it releases the fragrant oils in the zest and gives the cupcakes much more lemon flavor.

The blueberries get tossed with a little flour taken from the measured flour before I gently fold them into the batter. The batter is thick enough to support the berries, which helps keep them distributed throughout the cupcakes instead of collecting at the bottom.

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Why you’ll love these cupcakes

• Fresh lemon flavor – Both lemon zest and juice give these cupcakes plenty of bright citrus flavor.
• Soft and moist – Butter and sour cream create a rich, tender crumb without making the cupcakes heavy.
• Blueberries in every bite – The berries are folded directly into the batter rather than added as a separate filling.
• Simple from-scratch recipe – No cake mix or complicated filling; just a straightforward cupcake batter made with everyday baking ingredients.

Ingredients and Substitutions

• For the cupcakes
  • All-purpose flour – Gives the cupcakes enough structure to support the blueberries while keeping the crumb tender. Take the flour used to coat the berries from the measured amount rather than adding extra.
  • Baking powder and baking soda – I use both for lift. The baking soda also works with the acidity of the sour cream and lemon juice.
  • Salt – Balances the sweetness and enhances the lemon flavor.
  • Granulated sugar – Sweetens the cupcakes, but it also has another job here. I rub the fresh lemon zest into the sugar before creaming it with the butter to release more of the lemon’s aromatic oils.
  • Lemon zest – Use the finely grated zest of one fresh lemon. Zest the lemon before squeezing it for the juice.
  • Unsalted butter – Use softened, room-temperature butter so it creams properly with the lemon sugar and incorporates air into the batter.
  • Eggs – Two large eggs provide structure, richness, and moisture. Room-temperature eggs incorporate more easily into the creamed butter.
  • Fresh lemon juice – Adds the tart, fresh lemon flavor that complements the zest. Freshly squeezed is best here.
  • Sour cream – Keeps the cupcakes moist and gives them a soft, tender crumb without making the batter too thin. I prefer full-fat sour cream for baking.
  • Vanilla extract – A little vanilla rounds out the citrus flavor.
  • Blueberries – Fresh blueberries work beautifully. Toss them with a little flour taken from the recipe before gently folding them into the batter. Frozen blueberries can also be used without thawing first.
• Cream cheese frosting
  • Butter – Use unsalted butter softened to room temperature. The higher proportion of butter helps stabilize the frosting so it holds a neat piped swirl.
  • Cream cheese – Use full-fat block cream cheese for the best consistency. Avoid spreadable cream cheese, which contains more moisture and can make the frosting too soft for piping.
  • Powdered sugar – Sweetens and thickens the frosting. Sift it if it has any lumps so the frosting stays smooth.
  • Vanilla extract – Adds flavor and balances the tanginess of the cream cheese.
  • Salt – Just a small pinch helps balance the sweetness and brings out the vanilla and cream cheese flavors.

How to Make Lemon Blueberry Cupcakes

Prepare

Preheat the oven to 350°F (175°C) and line a muffin pan with cupcake liners.

Combine the dry ingredients

In a medium bowl, whisk together the flour, baking powder, baking soda, and salt. Set aside.

Make the lemon sugar

Add the sugar and lemon zest to the mixer bowl. Rub them together with your fingertips until the sugar feels slightly moist and becomes fragrant.

Cream the butter and sugar

Add the softened butter and beat with the lemon sugar until light and fluffy, about 2 to 3 minutes. Scrape down the sides and bottom of the bowl as needed. Add the eggs one at a time, beating well after each addition.

Add the wet ingredients

Mix in the lemon juice, sour cream, and vanilla extract until combined. The mixture may look slightly curdled at this stage, which is fine.

Add the flour

Add the dry ingredients and mix just until combined. Avoid overmixing once the flour has been added.

Fold in the blueberries

Toss the blueberries with a little flour taken from the measured flour. Gently fold them into the batter with a spatula.

Fill and bake

Divide the batter evenly between the cupcake liners, filling each about ⅔ to ¾ full. Bake until the cupcakes are lightly golden and a toothpick inserted into the center comes out clean or with a few moist crumbs.

Transfer the cupcakes to a wire rack and let them cool completely before frosting.

Make the Cream Cheese Frosting

Beat the butter

Beat the softened butter until smooth, creamy, and slightly lighter in color. Gradually add the powdered sugar, mixing on low at first, then beat until the frosting is smooth and pipeable. Add the vanilla and a pinch of salt and mix just until incorporated.

Add the cream cheese

Add the cream cheese and beat just until smooth and combined. Avoid beating it longer than necessary once the cream cheese goes in, as overmixing can soften the frosting.

Decorate

Transfer the frosting to a piping bag and pipe a swirl over each completely cooled cupcake. Finish each cupcake with a fresh blueberry and a small lemon slice or wedge.

Storage and Make Ahead

• Room temperature: Unfrosted cupcakes can be stored in an airtight container at room temperature for up to 2 days.
• Refrigerator: Once topped with cream cheese frosting, store the cupcakes covered in the refrigerator for up to 4 days. Bring them to room temperature for about 15 to 20 minutes before serving for the best texture.
• Freezer: Freeze the unfrosted cupcakes in an airtight container or freezer bag for up to 3 months. Thaw at room temperature, then frost and decorate before serving.
• Make ahead: Bake the cupcakes a day ahead and store them covered once completely cool. The cream cheese frosting can also be made ahead and refrigerated. Let it soften slightly at room temperature and give it a brief mix before piping.

Tips for Success

• Use room-temperature ingredients. Softened butter, eggs, sour cream, and cream cheese combine more evenly and give you a smoother batter and frosting.
• Rub the lemon zest into the sugar. This releases the fragrant oils in the zest and gives the cupcakes much more fresh lemon flavor.
• Don’t add extra flour to the blueberries. Take the flour used to coat them from the amount already measured for the recipe.
• Don’t overmix the batter. Once you add the flour, mix only until combined, then gently fold in the blueberries.
• Don’t overfill the liners. Fill them about ⅔ to ¾ full so the cupcakes have room to rise without overflowing.
• Cool completely before frosting. Even slightly warm cupcakes can soften the cream cheese frosting and make your piped swirls collapse.

More recipes with blueberries

• Baked Blueberry Cheesecake
• Blueberry Pie Recipe
• Blueberry Cobbler Recipe
• Blueberry Pancakes
• One Bowl Blueberry Yogurt Cake
• Blueberry Jam Recipe without Pectin

Troubleshooting

Problem	Possible cause & solution
Cupcakes are dense	The butter and sugar may not have been creamed sufficiently, or the batter was overmixed after adding the flour.
Cupcakes are dry	They were likely baked too long. Remove them when a toothpick has a few moist crumbs rather than waiting until the cupcakes feel completely firm.
Cupcakes sank in the center	They may have been underbaked, the liners may have been overfilled, or the oven door was opened too early.
Blueberries sank to the bottom	Toss the berries with a little of the measured flour and fold them gently into the finished batter.
Blueberries made the batter streaky	This happens more easily with frozen berries. Add them straight from the freezer and fold only enough to distribute them.
Cupcakes overflowed	Too much batter was added to the liners. Fill each approximately ⅔ to ¾ full.
Cream cheese frosting is too soft to pipe	The butter or cream cheese may have been too warm, or the frosting was overmixed after adding the cream cheese. Chill it briefly until firm enough to pipe.
Frosting is too stiff	Let it soften briefly at room temperature and mix again. Avoid adding liquid unless absolutely necessary because it can quickly make cream cheese frosting too soft.

Frequently asked questions

More Lemon recipes

• Luscious Lemon Blueberry Cupcakes
• Lemon Blueberry Cheesecake Tarts
• Lemon Blueberry Loaf with Crumble Topping
• Raspberry Lemon Pavlova
• Lemon Raspberry Cake
• The Ultimate Lemon Curd Tart

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