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Blueberry Lemon Poppy Seed Custard Cake

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Indulge in the delightful flavors of Blueberry Lemon Poppy Seed Custard Cake, a stunning dessert that brings together bright lemon zest, sweet blueberries, and nutty poppy seeds. This cake is perfect for any occasion—be it a spring gathering or a family celebration. Its creamy custard filling adds richness to the moist cake, making every bite a heavenly experience. Surprisingly easy to prepare, this dessert is sure to impress your guests with its beautiful presentation and refreshing taste.

  • Total Time: 1 hour 10 minutes
  • Yield: Approximately 8 servings 1x

Ingredients

Scale
  • 1/2 cup, plus 2 tablespoons granulated sugar
  • 1 stick (8 tablespoons) salted butter, at room temperature
  • 1 tablespoon lemon zest (Meyer if possible)
  • 1 large egg, at room temperature
  • 1 tablespoon, plus 2 teaspoons vanilla extract
  • 1 1/2 cups all-purpose flour
  • 2 tablespoons poppy seeds
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon kosher salt
  • 1/2 cup sour cream or plain Greek yogurt
  • 1 1/2 cups heavy cream
  • 4 large egg yolks
  • 2 cups fresh or frozen blueberries (thawed and drained)
  • 1 teaspoon granulated sugar
  • 1 teaspoon all-purpose flour
  • Powdered sugar for dusting

Instructions

  1. Preheat the oven to 350°F (175°C) and line a springform pan with parchment paper.
  2. In a large mixing bowl, beat together the butter, 1/2 cup sugar, and lemon zest until light and fluffy (about 2 minutes).
  3. Add in the egg and 1 tablespoon vanilla; mix until combined.
  4. Gradually incorporate flour, poppy seeds, baking soda, and salt; beat until well mixed.
  5. Finally, blend in sour cream until just combined. Spread batter over the bottom of the prepared pan and up the sides (about 1¼ inches), ensuring it’s even.
  6. In a medium bowl, whisk together egg yolks and 2 tablespoons sugar until well combined.
  7. Warm heavy cream until steaming; remove from heat and stir in remaining vanilla extract.
  8. Slowly whisk about 1/2 cup of warm cream into egg yolks while continuously stirring to prevent scrambling, then mix in remaining cream.
  9. Pour about three-quarters of the custard into the center of the cake batter.
  10. In another bowl, combine blueberries with sugar and flour, then sprinkle about 1½ cups of berries over custard.
  11. Bake for 25 minutes.
  12. Remove from oven and gently pour over reserved custard on top of baked layer. Sprinkle remaining berries on top.
  13. Bake an additional 20-25 minutes until sides are deep golden brown; center remains jiggly.
  14. Allow cooling before releasing from mold. Refrigerate for at least 1-2 hours before serving for best results.
  15. When ready to serve, dust generously with powdered sugar and enjoy!
  • Author: Madison
  • Prep Time: 20 minutes
  • Cook Time: 50 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 slice (100g)
  • Calories: 320
  • Sugar: 22g
  • Sodium: 150mg
  • Fat: 18g
  • Saturated Fat: 10g
  • Unsaturated Fat: 8g
  • Trans Fat: 0g
  • Carbohydrates: 36g
  • Fiber: 1g
  • Protein: 5g
  • Cholesterol: 80mg