Can I use frozen blackberries instead of fresh?

Yes, but don't thaw them first. Toss frozen berries directly in flour and fold into the batter to prevent excess moisture and color bleeding.

Why did my cake turn purple?

This happens when blackberries burst during mixing or baking. While it affects appearance, the flavor remains delicious. Using frozen berries or being extra gentle when folding can minimize this.

Can I make this as cupcakes?

Absolutely! Divide batter among 18-20 cupcake liners and bake for 18-22 minutes at 350°F. Check with a toothpick for doneness.

How do I know when the cake is properly done?

A toothpick inserted in the center should come out with just a few moist crumbs, not wet batter. The top should spring back lightly when touched.

Can I double this recipe?

Yes, this recipe doubles well for larger gatherings. Use two 9x13 pans or divide among multiple smaller pans, adjusting baking time as needed.

What's the best way to get the most lemon flavor?

Use both zest and juice, and make sure your lemons are fresh and at room temperature. Rolling them firmly on the counter before zesting releases more oils for maximum flavor.

Lemon Blackberry Cake Recipe: Moist & Bursting with Flavor

Description

Lemon Blackberry Cake is a bright, irresistible dessert with fresh lemon flavor and juicy blackberries baked into a soft, moist cake.

Ingredients

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For the Cake:

2½ cups all-purpose flour
1½ cups granulated sugar
½ cup unsalted butter, softened
3 large eggs, room temperature
1 cup sour cream
½ cup whole milk
¼ cup fresh lemon juice
2 tablespoons lemon zest (about 2 large lemons)
2 teaspoons vanilla extract
1½ teaspoons baking powder
½ teaspoon baking soda
½ teaspoon salt
1½ cups fresh blackberries, gently washed and dried

For the Lemon Glaze:

1½ cups powdered sugar
3–4 tablespoons fresh lemon juice
1 tablespoon lemon zest

Substitution Options:

Gluten-free: Replace flour with 1:1 gluten-free baking flour
Dairy-free: Use vegan butter and coconut cream instead of sour cream
Egg-free: Substitute each egg with ¼ cup unsweetened applesauce
Berry alternatives: Blueberries or raspberries work wonderfully

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Instructions

Prepare the Pan and Oven
Preheat oven to 350°F (175°C). Grease a 9×13-inch pan or two 9-inch round pans with butter and lightly dust with flour.
Cream Butter and Sugar
In a large bowl, beat butter and sugar for 3–4 minutes until light, fluffy, and pale. This helps create a tender cake.
Add Eggs and Wet Ingredients
Add eggs one at a time, mixing well after each. Stir in sour cream, milk, lemon juice, lemon zest, and vanilla until just combined. The batter may look slightly curdled.
Mix Dry Ingredients
In a separate bowl, whisk together flour, baking powder, baking soda, and salt.
Make the Batter
Gradually fold the dry ingredients into the wet mixture, mixing only until no flour streaks remain. Do not overmix.
Add Blackberries
Toss blackberries with 1 tablespoon of flour, then gently fold them into the batter.
Bake
Pour batter into prepared pan(s) and spread evenly. Bake for 45–50 minutes, until golden and a toothpick inserted in the center comes out with a few moist crumbs.
Make the Glaze
While the cake cools, whisk powdered sugar with lemon juice and zest until smooth. Adjust thickness as needed.

Prep Time: 20m
Cook Time: 45m
Category: Dessert
Cuisine: American

Nutrition

Serving Size: 12 servings
Calories: 320 calories
Fat: 8g
Carbohydrates: 58g
Fiber: 2g
Protein: 6g