Can I use bottled lemon juice instead of fresh lemon juice?

Fresh lemon juice is strongly recommended for lemon poppy seed cupcakes with blackberry frosting. Bottled lemon juice lacks the brightness and natural aroma that fresh juice provides. Fresh lemon zest is especially important, as it delivers most of the lemon flavor in the cupcakes.

Why is my blackberry frosting too thin?

Blackberry frosting can become too thin if the puree is still warm or contains excess liquid. Always allow the blackberry puree to cool completely and strain it well to remove seeds and extra juice. If the frosting is still soft, add more powdered sugar gradually or chill it briefly before frosting the cupcakes.

Lemon Poppy Seed Cupcakes with Blackberry Frosting

Q: Can I make lemon poppy seed cupcakes with blackberry frosting ahead of time?

Yes, lemon poppy seed cupcakes with blackberry frosting can be made ahead. The cupcakes can be baked one day in advance and stored unfrosted in an airtight container at room temperature. The blackberry frosting can be prepared separately and kept refrigerated. Frost the cupcakes shortly before serving for the best texture and appearance.

Description

Soft and fluffy lemon poppy seed cupcakes topped with a naturally flavored blackberry buttercream frosting. These cupcakes combine bright citrus flavor, delicate crunch from poppy seeds, and a lightly tart berry frosting for a bakery-style dessert that is perfect for spring and summer occasions.

Ingredients

Scale

1 1/2 cups (180 g) all-purpose flour
1 1/2 teaspoons baking powder
1/4 teaspoon salt
2 tablespoons poppy seeds
1/2 cup (113 g) unsalted butter, softened
3/4 cup (150 g) granulated sugar
2 large eggs
2 tablespoons lemon zest
1/4 cup (60 ml) fresh lemon juice
1/2 cup (120 ml) milk
1/2 cup (113 g) unsalted butter, softened (for frosting)
2 1/2 cups (300 g) powdered sugar
1/2 cup (75 g) blackberries

Cook Mode Prevent your screen from going dark

Instructions

Preheat the oven to 350°F (175°C) and line a cupcake pan with paper liners.
In a bowl, whisk together the flour, baking powder, salt, and poppy seeds.
In a separate large bowl, beat the butter and sugar until light and fluffy.
Add the eggs one at a time, mixing well after each addition.
Mix in the lemon zest and lemon juice until fully incorporated.
Alternate adding the dry ingredients and milk to the batter, mixing just until combined.
Divide the batter evenly between the cupcake liners, filling each about two-thirds full.
Bake for 18–22 minutes, or until a toothpick inserted in the center comes out clean.
Allow the cupcakes to cool completely before frosting.
To make the frosting, cook the blackberries over medium heat until soft and juicy, then strain and cool completely.
Beat the butter until smooth, then gradually add powdered sugar and the cooled blackberry puree until creamy.
Frost the cooled cupcakes and serve.

Notes

Use fresh lemon zest for the brightest flavor.
Ensure the blackberry puree is fully cooled before adding it to the frosting.
If frosting is too soft, chill briefly before piping.
Cupcakes can be baked one day ahead and frosted before serving.

Nutrition

Serving Size: 1 cupcake
Calories: 320 kcal
Sugar: 28 g
Sodium: 150 mg
Fat: 16 g
Saturated Fat: 9 g
Unsaturated Fat: 6 g
Trans Fat: 0 g
Carbohydrates: 42 g
Fiber: 2 g
Protein: 4 g
Cholesterol: 70 mg