Moist Cake with Wheat Semolina and Jam – A Professional Culinary Guide to the Fluffiest and Moistest Sponge Cake, Which You Can Whip Up in 5 Minutes Without a Scale

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Moist Cake with Wheat Semolina and Jam – A professional culinary guide to the fluffiest and moistest sponge cake, which you can whip up in 5 minutes without a scale! When you’re surprised by unexpected guests or you simply crave something sweet, warm, and homemade, this recipe is your lifesaver. Forget about complicated measuring down to the gram; this classic “by-the-cup” recipe works on the principle of perfect proportions. The secret to its unbeatable moistness lies in two ingredients: the jam, which is mixed directly into the batter (where it acts as a natural moisture retainer), and the wheat semolina, which—when properly hydrated—creates an incredibly soft, airy, and slightly grainy texture. In this expert guide, we reveal why the batter must rest for 15 minutes before baking and why you shouldn’t be alarmed if the cake feels incredibly soft to the touch at the end of baking.

• Prep and mixing time: 5 minutes
• Mandatory rest period for the crew: 15 minutes
• Baking time: 25 minutes
• Quantity: for a standard medium-sized baking pan (approx. 20×30 cm)
• Difficulty: Very easy (perfect for beginners and baking with kids)

Ingredients for a Moist Semolina Cake (“By Measure”)

The Golden Rule: 1 scoop in this recipe equals exactly 2 dl (200 ml) —you can use a standard yogurt cup or a regular water glass. Use the same glass for all ingredients!

Wet ingredients and flavoring

• 3 fresh eggs (at room temperature, if possible)
• 1 measuring cup (2 dl) of neutral oil (e.g., sunflower or canola)
• 1 scoop (2 dl) of whole milk
• 1 scoop (2 dl) of your favorite homemade jam or preserves (apricot, plum, or mixed fruit jams work wonderfully because of their natural acidity)

Dry Ingredients (Structure)

• 1 scoop (2 dl) of white sugar
• 1 packet of vanilla sugar
• 1 scoop (2 dl) of all-purpose wheat flour
• 1 scoop (2 dl) of wheat semolina (grits)
• 1 packet of baking powder

Step-by-Step Preparation Process

1Combining the Ingredients: Crack the eggs into a large bowl and add the sugar and vanilla sugar. Using an electric mixer or a hand whisk, beat vigorously for a few minutes until the mixture turns pale yellow and frothy. Then pour in the milk and oil, and add the jam. Stir briefly. At this stage, the mixture will have an intoxicating aroma of fruit and vanilla.

2Mixing in the Dry Ingredients and WARNING: Now sift the flour, baking powder, and wheat semolina into the wet mixture. Mix everything well with a whisk so that no dry lumps remain. Don’t worry: At this point, the batter will look quite thin and runny. This is completely normal and exactly as it should be!

3Critical Step (Hydrating the Semolina): Cover the bowl with the mixture with a cloth and be sure to let it rest on the kitchen counter for 10 to 15 minutes. During this time, the wheat semolina will absorb the liquid, the grains will swell, and the mixture will naturally thicken into a rich, creamy batter. If you skip this step, the baked cake will be crunchy and grainy, like sand.

4Preparing the baking pan and pouring the batter: While the batter is resting, preheat the oven to 180 °C (conventional top/bottom heat). Lightly grease the baking pan and dust it thinly with flour or breadcrumbs (or simply line it with parchment paper). Pour the thickened, puffed batter into the baking pan and spread it evenly to the corners using a spatula.

5. Baking and Caramelization: Place the baking pan in the middle of the preheated oven and bake for about 25 minutes. Your kitchen will be filled with the aroma of warm, caramelized jam. The cake is done when a beautiful dark golden-brown crust forms on top. If you’re not sure, do the toothpick test: insert a toothpick into the center—it should come out almost dry (it may be slightly sticky due to the fruit jam in the batter).

6Cooling and Serving (Softness Test): When you take the cake out of the oven and gently touch it with your finger, it will be extremely soft, almost “fluffy and wobbly.” Don’t panic and don’t put it back in the oven! It’s supposed to be like that. Let it cool in the pan. Cut it into cubes only after it has cooled. If desired, you can dust it with powdered sugar or drizzle it with melted chocolate.

Professional Culinary Tips (E-E-A-T Tips for Success)

• The Science of Wheat Semolina (Why Let It Rest?): Wheat semolina consists of coarsely ground particles of wheat (endosperm). Unlike fine flour, these particles do not dissolve immediately in liquid. If you put coarse semolina directly into a hot oven, it will harden, and the cake will “scrape” against your teeth when you chew it. Letting the wet dough rest for 15 minutes allows the starch to absorb moisture and swell. This way, the semolina transforms into a perfectly moist, spongy texture in the oven.
• The Role of IN-DOUGH Jam (In the Dough): Most recipes call for spreading jam *on* a baked sponge cake. But this trick from the Gorenjska and Štajerska regions—where you mix the jam *into* the raw batter—is genius. The fruit in the jam (pectin) and the invert sugars bind moisture and prevent it from escaping during baking. That’s why this cake stays fresh, moist, and soft even on the third day after baking (if it doesn’t run out before then).
• The Reaction Between Acid and Baking Powder: Jams (especially apricot or plum) contain natural fruit acids. These acids chemically react with the base in the baking powder, producing additional carbon dioxide. The result? An even fluffier and lighter cake, despite heavy ingredients like oil and semolina!
• Why does the “by measure” (cups) recipe work? When baking, precision down to the gram is often essential. But with oil-based sponge cakes like this one, what matters most is the volume ratio between the wet (milk, oil) and dry (flour, semolina, sugar) ingredients. So it doesn’t matter at all whether you use a 2 dl yogurt cup or a 2.5 dl coffee cup—as long as you measure all the ingredients using the same cup, the chemistry in the oven will work perfectly!

Frequently Asked Questions (FAQ)

Which jam goes best with this cake?

This cake will turn out well with any kind of marmalade or jam, but slightly tart marmalades create the best culinary contrast. Homemade apricot, plum (jam), sour cherry, or wild berry marmalade will perfectly balance the sweetness of the dough and give the cake a beautiful caramel color.

The cake is incredibly soft and moist after baking—did I mess it up?

Absolutely not! That’s the best part of this recipe and a sign that you’ve made it perfectly. The combination of wheat flour, oil (which, unlike butter, remains liquid at room temperature), and jam inside the batter creates an incredibly soft, almost “pudding-like” and fluffy texture for the sponge cake. Just let it cool completely, and it will be easy to slice.

Can I add anything else to the mixture?

This recipe is extremely versatile. For a festive touch, you can stir a handful of ground or coarsely chopped walnuts, a tablespoon of dark cocoa powder, a pinch of cinnamon, or a few tablespoons of raisins (previously soaked in rum) into the dough just before letting it rest.