Blueberry Lemon Sourdough Cake

There is something undeniably comforting about a cake baked right in a cast iron skillet — the kind that fills your kitchen with the warm scent of butter, lemon, and toasted fruit. This Blueberry Lemon Sourdough Skillet Cake with Icing Drizzle is exactly that kind of bake. It is moist and tender at its core, bursting with juicy fresh blueberries, and lifted by the bright, clean zest of lemon. What sets it apart from every other blueberry cake is the secret ingredient: sourdough starter. Whether you use active discard or a mature unfed starter, it lends the crumb a gentle tang and a subtle complexity that makes every bite feel like something special. Finished with a glossy lemon icing drizzled over the top while still slightly warm, this skillet cake is as beautiful as it is delicious — rustic enough for a weekday treat and stunning enough to serve at any gathering.

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The beauty of this recipe lies in its simplicity and balance. Creaming the butter and sugar until light and fluffy creates the foundation for a beautifully airy crumb. Adding eggs one at a time ensures the batter emulsifies smoothly, while folding in the blueberries at the very end — gently, with a spatula — keeps them whole and jammy rather than crushed and streaked throughout the batter. The sourdough starter works in harmony with the baking powder and baking soda to give the cake just the right amount of lift, so you get a cake that is soft and springy without being dense. Once the cake comes out of the oven golden and fragrant, a quick icing made from powdered sugar and fresh lemon juice is whisked together and drizzled over the top in generous ribbons. It sets into a delicate, slightly glossy glaze that makes the finished cake look bakery-worthy with barely any effort.

Ingredients

• Cake
• 1 cup (125 g) all-purpose flour
• 1/2 cup (113 g) unsalted butter, softened
• 3/4 cup (150 g) granulated sugar
• 2 large eggs
• 1/2 cup (120 ml) active sourdough starter (unfed/discard)
• 1/4 cup (60 ml) whole milk
• 1 tsp vanilla extract
• Zest of 1 lemon
• 2 tbsp fresh lemon juice
• 1 tsp baking powder
• 1/4 tsp baking soda
• 1/4 tsp salt
• 1 1/4 cups (180 g) fresh blueberries (plus extra for garnish)
• Icing Drizzle
• 1/2 cup (60 g) powdered sugar
• 1–2 tbsp fresh lemon juice

Instructions

Step 1

Preheat oven to 350°F (175°C). Grease a 10-inch oven-safe skillet (preferably cast iron) with butter or nonstick spray.

Step 2

In a medium bowl, whisk together flour, baking powder, baking soda, and salt; set aside.

Step 3

In a large bowl, cream softened butter and sugar until light and fluffy. Add eggs one at a time, mixing well after each.

Step 4

Mix in vanilla extract, lemon zest, and lemon juice. Stir in the sourdough starter until combined.

Step 5

Add half of the flour mixture, mixing until just incorporated. Add milk, then remaining flour mixture, stirring gently but thoroughly.

Step 6

Fold in the blueberries with a spatula, being careful not to overmix.

Step 7

Pour batter into prepared skillet, spreading evenly. Sprinkle a few extra blueberries on top if desired.

Step 8

Bake for 30–35 minutes or until golden and a toothpick inserted in the center comes out clean.

Step 9

Cool in skillet for 15 minutes.

Step 10

Meanwhile, whisk powdered sugar with lemon juice to form a thick but pourable icing. Drizzle over the cooled cake.

Step 11

Slice and serve warm or at room temperature.

Zusatztipps für die Zubereitung

Damit dein Skillet-Cake optimal gelingt, achte darauf, die Butter wirklich weich werden zu lassen, bevor du sie cremig rührst — sie sollte Zimmertemperatur haben, damit sich Zucker und Butter gleichmäßig verbinden. Verwende nach Möglichkeit frische Blaubeeren für das beste Ergebnis; solltest du gefrorene Beeren verwenden, gib sie direkt aus dem Gefrierfach in den Teig, ohne sie vorher aufzutauen, damit sie nicht zu viel Feuchtigkeit abgeben. Rühre den Teig nach dem Hinzufügen der Mehlmischung nur so lange, bis alles gerade eben verbunden ist — Überrühren aktiviert das Gluten zu stark und macht den Kuchen zäh. Nutze ein Zahnstocher-Test in der Mitte des Kuchens, um die Garzeit präzise zu kontrollieren.

Varianten und Anpassungen

Dieses Rezept lässt sich wunderbar variieren. Ersetze Zitronenschale und Zitronensaft durch Orangenschale und Orangensaft für eine süßere, vollmundigere Zitrusnote. Für eine knusprige Oberfläche kannst du vor dem Backen groben Zucker oder gehobelte Mandeln auf den Teig streuen. Wer es noch etwas dekadenter mag, serviert den warmen Kuchen mit einer Kugel Vanilleeis oder einem großzügigen Löffel Schlagsahne. Das Sourdough Discard kann sowohl frisch als auch gereift verwendet werden — je nach Säuregrad des Starters variiert die Intensität der Tangnote leicht, was dem Kuchen jedes Mal eine etwas andere Tiefe verleiht.

Serviervorschläge

Dieser Skillet-Cake macht direkt aus der Pfanne serviert den besten Eindruck. Schneide ihn in 8 gleichmäßige Stücke und reiche ihn warm oder bei Zimmertemperatur. Ein Klecks Schlagsahne oder eine Kugel Vanilleeis rundet das Dessert perfekt ab. Auch als Brunchbeilage, zu einer Tasse Tee oder als festlicher Nachtisch macht dieser Kuchen eine hervorragende Figur. Garniere ihn kurz vor dem Servieren mit einigen frischen Blaubeeren für eine ansprechende Optik.

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This Blueberry Lemon Sourdough Skillet Cake is the kind of recipe that becomes a household staple — simple enough to pull together on a weeknight yet impressive enough to bring to any table. With its golden crust, tender crumb packed with jammy blueberries, bright lemon character, and that irresistible icing drizzle, it checks every box a great dessert should. The addition of sourdough starter is a small step that makes a surprisingly big difference, transforming a straightforward blueberry cake into something with genuine depth and character. Whether you serve it warm from the skillet with a scoop of vanilla ice cream or enjoy a slice at room temperature the next morning with your coffee, this cake delivers every single time. Give it a try and let the skillet do the magic.

Recipe FAQs

→ Can I use frozen blueberries instead of fresh?

Yes, frozen blueberries can be used without thawing to maintain their shape and avoid excess moisture in the batter.

→ What is the role of sourdough starter in this cake?

Sourdough starter adds depth and a subtle tang to the flavor, while also improving texture and moisture.

→ Why bake the cake in a skillet?

Baking in a skillet ensures even heat distribution, helping to achieve a golden crust and tender crumb.

→ Can I substitute orange zest and juice for lemon?

Yes, swapping in orange zest and juice provides a sweeter citrus note for a delightful variation.

→ How should I store leftover cake?

Store leftovers in an airtight container at room temperature for up to 2 days or refrigerate for up to 5 days.

→ Is it possible to add a crunchy topping?

Sprinkling coarse sugar or sliced almonds on top before baking adds a pleasant crunch to the cake’s surface.