Grandma’s 8-Spoon Plum Cake – Easy No-Scale Recipe with Buttery Crumble

This Grandma’s 8-Spoon Plum Cake is a wonderfully soft, juicy, and tender homemade fruit cake topped with fresh plums and a simple buttery crumble.

One of the best things about this recipe is that you don’t need a kitchen scale for the main batter ingredients. Sugar, vegetable oil, milk, lemon juice, and flour are all measured using tablespoons, making the recipe simple, convenient, and easy to remember.

 

The batter takes only about 5 minutes to prepare. Fresh lemon zest and juice add brightness, while 400 g of fresh plums provide plenty of juicy fruit flavor. A little cornstarch helps manage the moisture from the plums, and the easy three-ingredient crumble creates a delicious buttery topping.

Perfect for afternoon coffee, tea, family gatherings, or a comforting fruit dessert, this easy plum cake combines a soft homemade base, juicy fruit, and crumbly topping in every slice.

 

Ingredients

For the Plum Cake

• 2 eggs
• 8 tablespoons sugar
• 1 teaspoon vanilla sugar or vanilla extract
• A pinch of salt
• 8 tablespoons vegetable oil
• 8 tablespoons milk
• Zest of 1 lemon
• 8 tablespoons lemon juice
• 8 tablespoons flour
• 1 teaspoon baking powder
• 400 g (14.1 oz) fresh plums
• 1 tablespoon cornstarch

For the Crumble

• 3 tablespoons flour
• 2 tablespoons sugar
• 1 tablespoon butter

 

How to Make Grandma’s 8-Spoon Plum Cake

1. Preheat the Oven

Preheat your oven to 180°C (350°F).

Prepare your baking dish by lightly greasing it or lining it with baking paper.

Set it aside while you prepare the cake.

2. Prepare the Plums

Wash 400 g (14.1 oz) fresh plums thoroughly.

Cut them in half and remove the stones. Depending on the size of your plums, you can leave them as halves or cut them into smaller pieces.

Place the prepared plums in a bowl.

Add 1 tablespoon cornstarch and gently toss until the fruit is lightly coated.

The cornstarch helps absorb some of the juice released by the plums during baking.

Set the prepared fruit aside.

 

3. Mix the Eggs and Sugar

Crack 2 eggs into a large mixing bowl.

Add 8 tablespoons sugar, 1 teaspoon vanilla sugar or vanilla extract, and a pinch of salt.

Whisk until everything is thoroughly combined and the mixture becomes smooth and slightly lighter in color.

4. Add the Vegetable Oil

Pour in 8 tablespoons vegetable oil.

Whisk gently until the oil is completely incorporated into the egg mixture.

Vegetable oil helps keep the finished cake soft and moist.

 

5. Add the Milk

Pour in 8 tablespoons milk.

Continue mixing until the wet ingredients are smooth and evenly combined.

6. Add the Lemon

Finely grate the zest of 1 lemon into the mixture.

Then add 8 tablespoons lemon juice.

Stir until evenly incorporated.

The fresh lemon gives the cake a bright citrus flavor that complements the sweet and slightly tart plums beautifully.

 

7. Add the Flour and Baking Powder

Add 8 tablespoons flour and 1 teaspoon baking powder.

Gently mix until the dry ingredients are incorporated and a smooth batter forms.

Avoid overmixing once the flour has been added. Mix only until there are no visible pockets of dry flour.

8. Transfer the Batter to the Baking Dish

Pour the prepared cake batter into your baking dish.

Use a spatula to spread the batter into an even layer.

 

9. Arrange the Plums

Arrange the cornstarch-coated plums evenly over the cake batter.

Distribute the fruit across the entire surface so each slice contains plenty of juicy plum.

Depending on how you cut the plums, gently press them slightly into the batter without completely covering them.

10. Prepare the Buttery Crumble

In a small bowl, combine:

• 3 tablespoons flour
• 2 tablespoons sugar
• 1 tablespoon butter

Use your fingertips to gently rub the butter into the flour and sugar until the mixture forms small crumbs.

Avoid working the mixture too much. The goal is to create a loose, crumbly texture rather than a smooth dough.

 

11. Add the Crumble Topping

Sprinkle the prepared crumble evenly over the plums.

Try to distribute it across the entire surface so the finished cake has a combination of juicy fruit and buttery crumbs in every serving.

12. Bake

Place the cake in the preheated oven.

Bake at 180°C (350°F) for about 40 minutes, or until the cake is baked through and the crumble topping is lightly golden.

To check for doneness, insert a toothpick or wooden skewer into a cake section away from a plum.

It should come out clean or with only a few moist crumbs.

Remember that the fruit itself will remain juicy, so avoid testing directly through a piece of plum.

 

13. Cool and Serve

Remove the plum cake from the oven and allow it to cool slightly in the baking dish.

The fruit filling will be very hot immediately after baking, so allowing the cake to rest also makes it easier to cut.

Once it has cooled sufficiently, slice and serve.

Enjoy slightly warm for an especially soft and juicy dessert, or allow it to cool completely before serving.

 

Tips for the Best Plum Cake

Choose ripe but firm plums: Plums should be flavorful and juicy but still firm enough to hold some shape during baking.

Use the same tablespoon: Since the recipe relies heavily on spoon measurements, using the same tablespoon throughout helps keep the proportions consistent.

Coat the plums with cornstarch: Don’t skip the 1 tablespoon cornstarch. It helps manage some of the moisture released by the fresh fruit.

Use fresh lemon: Freshly grated zest and lemon juice provide the brightest citrus flavor.

Don’t overmix the batter: Once the flour has been added, mix only until the batter comes together.

Keep the crumble crumbly: Rub the butter into the flour and sugar just until small crumbs form. Don’t knead it into a dough.

Test the cake away from the fruit: A toothpick inserted through a juicy plum will naturally come out wet.

 

Why You’ll Love This Recipe

This plum cake combines three delicious textures in one easy homemade dessert.

The base is soft and tender, the fresh plums become beautifully juicy and flavorful, and the buttery crumble adds a contrasting texture on top.

The simple spoon-measuring method also makes preparation convenient. The main batter follows an easy pattern with 8 tablespoons each of sugar, vegetable oil, milk, lemon juice, and flour.

There’s no complicated decorating or elaborate preparation. Make the batter, arrange the plums, add the crumble, and bake.

It’s an excellent recipe for making the most of fresh plums when they are in season.

 

Serving Suggestions

Grandma’s plum cake is delicious served slightly warm or completely cooled.

Try it with:

• Freshly brewed coffee
• Black or herbal tea
• A cold glass of milk
• Whipped cream
• Plain or Greek yogurt
• Vanilla ice cream
• A light dusting of powdered sugar

For dessert, a slightly warm slice with vanilla ice cream pairs especially well with the juicy plums and buttery crumble.

 

How to Store Plum Cake

Allow the cake to cool completely before storing.

Place leftover slices in an airtight container.

Because this cake contains a generous amount of fresh fruit, storing leftovers in the refrigerator is a good choice, especially for longer storage.

Keep the cake well covered to prevent it from drying out or absorbing other refrigerator odors.

For a softer texture and fuller flavor, allow refrigerated slices to sit briefly at room temperature before serving.

 

Frequently Asked Questions

Do I need a kitchen scale for this plum cake?

The main batter ingredients are primarily measured with tablespoons, so a kitchen scale is not required for those measurements.

However, the recipe specifies 400 g (14.1 oz) fresh plums.

Why is it called an 8-spoon plum cake?

Several of the main ingredients use the same easy measurement:

8 tablespoons sugar, 8 tablespoons vegetable oil, 8 tablespoons milk, 8 tablespoons lemon juice, and 8 tablespoons flour.

This makes the basic recipe especially easy to remember.

 

Does the cake really take 5 minutes?

The 5 minutes refers to the approximate preparation time for the basic cake batter. Preparing the plums and crumble may require a little additional time, and the assembled cake then bakes for about 40 minutes.

Why do I need cornstarch?

Fresh plums release juice as they bake. The 1 tablespoon cornstarch helps absorb and manage some of that moisture.

Can I use vanilla extract instead of vanilla sugar?

Yes. The original recipe allows 1 teaspoon vanilla sugar or vanilla extract.

 

What makes the crumble topping?

The simple crumble consists of only 3 tablespoons flour, 2 tablespoons sugar, and 1 tablespoon butter.

How do I know when the cake is ready?

After approximately 40 minutes at 180°C (350°F), the cake should be set and the crumble should be lightly golden.

Insert a toothpick into a cake portion away from the plums. It should come out clean or with only a few moist crumbs.

Can I serve the cake warm?

Yes. This plum cake is especially delicious slightly warm, but allow it to rest after baking because the fruit will initially be very hot.

 

Final Thoughts

This Grandma’s 8-Spoon Plum Cake is a simple and delicious way to turn fresh plums into a soft, juicy homemade dessert.

With an easy spoon-measured batter, 400 g of fresh plums, refreshing lemon, and a simple buttery crumble, every slice offers a wonderful combination of tender cake, juicy fruit, and crumbly topping.

Prepare the batter in about 5 minutes, assemble the cake, and bake it at 180°C (350°F) for about 40 minutes.

It’s an easy Grandma-style fruit cake that pairs beautifully with coffee or tea and is especially perfect when fresh plums are in season.