Grandma’s Chocolate Yogurt Marble Cake

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Grandma’s Chocolate Yogurt Marble Cake
This soft and moist cake combines rich chocolate batter with creamy yogurt filling, creating a beautiful marbled look and a tender texture in every slice.

🧾 Ingredients

For the Cake Batter:

  • 3 eggs (room temperature)

  • 150 g (¾ cup) sugar

  • 110 ml vegetable or sunflower oil

  • 110 ml milk

  • 250 g (about 1⅔ cups) all-purpose flour

  • 15 g baking powder

  • 20 g cocoa powder

  • 2 tablespoons milk (for cocoa mixture)

  • A dash of vanilla extract

  • A pinch of salt

For the Yogurt Filling:

  • 300 g thick yogurt or Greek yogurt

  • 1 egg

  • 50 g sugar

  • 1 tablespoon cornstarch

👩‍🍳 Instructions

1. Prepare the Base Batter

In a large mixing bowl, add:

  • Eggs

  • Sugar

  • Salt

  • Vanilla extract

Whisk well until the mixture becomes pale and slightly thick.

Slowly add:

  • Oil

  • Milk

Whisk again until fully combined.

Sift in:

  • Flour

  • Baking powder

Fold gently using a spatula until smooth and lump-free. Do not overmix.

2. Make the Chocolate Batter

Transfer about one-third of the batter into a separate bowl.

In another small bowl, mix:

  • Cocoa powder

  • 2 tablespoons milk

Stir to form a smooth paste.

Add this cocoa paste to the smaller portion of batter and mix until dark and well blended.

3. Prepare the Yogurt Filling

In a bowl, combine:

  • Yogurt

  • Egg

  • Sugar

  • Cornstarch

Whisk until smooth and creamy. Set aside.

4. Assemble the Cake

Preheat oven to 180°C (350°F).

Grease a round cake pan or springform pan.

Pour the chocolate batter into the pan and spread evenly.

Pour the plain batter over the chocolate layer.

Use a skewer or knife to gently swirl the batters together to create a marble effect.

Spoon small dollops of the yogurt mixture on top. They will sink slightly during baking and create creamy pockets inside the cake.

5. Bake

Place the pan in the oven and bake for 35–45 minutes.

Check doneness by inserting a toothpick into the cake portion (not the yogurt spots). It should come out clean.

Remove from oven and let the cake cool completely in the pan before removing.

🍽 Serving

Slice and serve:

  • Plain

  • With tea or coffee

  • Lightly dusted with powdered sugar

  • With fresh fruit

⭐ Helpful Tips

✔ Do not overmix the batter
✔ Use thick yogurt for best texture
✔ Let cake cool fully before slicing
✔ Add chocolate chips for extra richness

📦 Storage

  • Store covered at room temperature for 1 day

  • Refrigerate for up to 3 days

  • Can be frozen for up to 1 month

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