Polish Summer Fruit Cake Recipe You Must Try

This Polish summer fruit cake is a soft, easy bake topped with a buttery crumble, and it happily takes whatever fruit you have to hand. It is the sort of cake we make all through the warmer months, changing the fruit as the season goes along.

I made mine with strawberries and rhubarb picked fresh from my allotment, with a few shop-bought blueberries and apricots thrown in. It is very forgiving, so it is a good one whether you bake often or hardly ever.

For more Polish sweet baking, try my Polish Donuts - Easy Pączki Recipe. My guide to Polish food covers the rest of the Polish baking year.

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Ciasto z Owocami i Kruszonką: the Polish Name for This Cake

In Poland this is ciasto z owocami i kruszonką, fruit cake with crumble, and the method behind it is called ciasto ucierane, a creamed cake, from ucierać, to cream or beat. It is one of the most common home bakes in the country, made all summer as different fruit comes into season, and every family has their own version.

It is not a fancy cake and it is not trying to be. It is the tray that goes on the table when there is fruit that needs using, and it is usually gone within a day.

A Note on Oven Temperature

180C fan, which this recipe uses, works out at roughly 200C conventional, hotter than most Polish versions of this cake, which typically run 170 to 175C conventional (about 155 to 160C fan). If your cake browns on top before the middle has set, that is the usual reason. Drop to 160C fan or 180C conventional and start checking a few minutes before the timer.

Why You’ll Love This Polish Summer Fruit Cake

This Polish summer fruit cake is a lovely combination of tender, buttery cake and a sweet-tart fruit filling, all topped with a crispy, golden crumble. Whether you’re a fan of traditional Polish desserts or just love a good fruit cake, this recipe is sure to become a family favourite. Perfect for summer gatherings, brunches, or simply enjoying with a cup of coffee, this cake is as versatile as it is delicious.

Choosing the Best Fruits for Your Cake

One of the best things about this Polish fruit cake recipe is how adaptable it is to whatever fresh fruits are in season. Classic choices include strawberries, blueberries, rhubarb, and apricots, but you can easily swap in other fruits like raspberries, peaches, or even cherries. The natural sweetness and slight tartness of the fruit contrast beautifully with the buttery cake and crumbly topping.

Storing and Serving Your Cake

This summer fruit cake is best enjoyed fresh out of the oven, but it can also be stored for later. To keep the cake moist and the crumble crisp, store it in an airtight container at room temperature for up to three days. For longer storage, you can freeze the cake for up to a month, though the crumble will soften as it thaws and will not be as crisp as fresh. Thaw it at room temperature before serving, and a few minutes in a warm oven will bring some of the crunch back.

🍽 What to Serve It With: A hot cup of coffee, a glass of iced tea, or a scoop of vanilla ice cream alongside. If you like this one, try my classic Polish baked cheesecake next.

Equipment You’ll Need

Ingredient Substitutions

• Butter can be swapped for the same weight of a neutral oil, which gives a slightly denser, more moist crumb.
• Plain flour in the crumble can take a swap to a coarser grade if you have one, it gives bigger, sandier crumbs.
• The fruit is flexible. Rhubarb and strawberries, cherries and raspberries, or apricots on their own all work, use whatever is ripe.
• Vanilla bean paste can be replaced with the same amount of vanilla extract.

How to Make Polish Summer Fruit Cake, Step by Step

1. Preheat the oven. Set your fan oven to 180C (or see the note above if you would rather bake it closer to the Polish original). Grease a 9×13 inch tray lightly and line it with parchment so the cake lifts out cleanly.
2. Prepare the cake batter. Get the butter properly to room temperature first, cold butter will not cream smoothly and you end up with a dense sponge. Beat the butter and sugar on high speed until pale and fluffy, then drop to medium and add the eggs one at a time, letting each one disappear before the next goes in. Beat in the vanilla.
3. Incorporate the dry ingredients. Add the sifted flour, baking powder and salt and mix on low speed until just combined, no longer, or you will knock the air back out. If the batter is too stiff to spread, loosen it with a tablespoon or two of milk or water.
4. Assemble the cake. Spread the batter evenly in the tray. Halve the strawberries, chop the rhubarb into chunks and quarter the apricots, then toss the fruit in a spoonful of flour, the standard Polish trick to stop it sinking or weeping into the sponge. Spread it evenly rather than clustering it, so every slice gets fruit.
5. Make the crumble topping. The crumble is what sets this cake apart, so keep the butter cold and cut it into small pieces before rubbing it into the flour and sugar, warm butter turns it into paste rather than crumbs. Rub between your fingers to coarse crumbs, or squeeze it together lightly first if you like a chunkier top, then scatter it over the fruit.
6. Bake for 40 to 45 minutes. Ovens vary more than recipes admit, so start checking a few minutes before the timer, particularly near the end when the top can colour fast. A toothpick in the centre should come out clean or with a few moist crumbs, not wet batter. If it is browning before the middle sets, that is the oven running hot, see the temperature note above.
7. Cool and serve. Leave it in the tray for 10 minutes before moving it, or it will break up while it is still hot. Slice and enjoy with tea or coffee. Smacznego!

Recipe Card for Polish Summer Fruit Cake

Variations

• Mixed Berry: Use a combination of raspberries, blueberries, and blackberries for a tart and sweet variation.
• Apple Cinnamon: Replace the fruit with thinly sliced apples and add cinnamon to the crumble topping for a cozy autumn flavour.
• Tropical: Use tropical fruits like mango, pineapple, and kiwi, and sprinkle coconut in the crumble for a taste of the tropics.
• Lemon Blueberry: Add the zest of one lemon to the batter and fold in fresh blueberries for a bright, citrusy flavour.
• Nutty: Add chopped nuts like almonds or walnuts to the crumble for extra crunch.
• Chocolate Lover’s: Mix chocolate chips into the batter and add cocoa powder to the crumble for a rich chocolate twist.

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FAQ for Polish Summer Fruit Cake

My cake is dark on top but raw in the middle. What went wrong?

This is almost always the oven running too hot for the tin, and it is the most common failure with this style of cake. If you are using a fan oven, try dropping to 160C fan and checking a few minutes early, and use a smaller or thicker tin only if you also extend the bake. A skewer should come out clean or with a few moist crumbs, not wet batter.

Can I make it in a different size tin?

Yes. Scale the whole recipe up by about a third to move from a 9×13 tray to something roughly 30% bigger, and check it a little earlier since a larger, shallower cake bakes faster than a smaller, deeper one. A deeper tin with the same quantities will need longer in the oven.

What fruit works best?

Juicy summer fruits like plums, cherries, blueberries, rhubarb or apricots all work beautifully. Use whatever is ripe and in season.

Why did my fruit sink to the bottom?

This recipe arranges the fruit on top of the batter rather than folding it in, so sinking usually means the batter was too thin, or the fruit was very wet and heavy. Dust the fruit lightly in flour before laying it out, keep the batter thick enough to hold its shape, and drain any juicy fruit first.

Can I use frozen fruit?

Yes, but thaw it to room temperature first and pour off any liquid that collects. Frozen fruit used straight from the freezer releases water as it thaws in the oven, which is what makes the sponge underneath turn soggy.

Can I make it ahead or freeze it?

Yes - it keeps for a few days in a tin and freezes well, so you can enjoy a taste of summer any time.

A Few Words from the Chef

Baking this Polish summer fruit cake is a lovely experience that allows for plenty of creativity. Feel free to experiment with different fruits or tweak the crumble topping to suit your taste. Whether you stick to the classic recipe or try new variations, each cake brings its own unique charm, making every bake a special occasion. The joy of baking lies in these small adjustments, so don’t hesitate to make it your own!