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There’s something about a jam sponge that feels genuinely timeless. No frosting, no fuss, just two golden rounds of soft cake with a generous layer of jam pressed in between.
This is a Victoria sponge in its most stripped-back form, not far in spirit from the light individual sponge cakes that follow the same simple logic. Equal weights of butter, sugar, eggs, and flour. A clean, honest formula that bakers have relied on for well over a century.
I first made this version on a grey Saturday afternoon with nothing but a punnet of strawberries and a jar of jam in the fridge. It came together in under an hour and disappeared just as fast.
The texture is the thing. A properly made jam sponge has a fine, even crumb that holds its shape when you slice it but still springs back when you press the top. Getting that right is mostly about room-temperature butter and not opening the oven door too early.
Why You’ll Love This Recipe
- One bowl batter with only four core ingredients
- Bakes in 20 minutes with no special equipment
- Works with any thick jam, not just strawberry
- Keeps moist for two days at room temperature
Ingredient Notes
- unsalted butter: Must be at room temperature so it creams properly. Cold butter will leave lumps and a dense crumb. Salted butter works in a pinch – just skip the pinch of salt.
- caster sugar: Finer than granulated, so it dissolves faster during creaming. If you only have granulated, pulse it in a food processor for 30 seconds.
- self-raising flour: Already has baking powder mixed in at the right ratio. If using plain flour, add 2 tsp baking powder per 200 g flour.
- large eggs: Use eggs at room temperature. Cold eggs can cause the batter to curdle, which affects the final texture.
- strawberry jam: A thick, chunky preserve works best because it stays put when you slice the cake. Raspberry jam is the classic British alternative and works just as well.
- vanilla extract: Optional but it adds a warmth that rounds out the sweetness. Use a real extract, not essence, for a cleaner flavor.
Old Fashioned Jam Sponge Cake
Ingredients
Method
- Heat the oven to 180 C / 350 F. Grease two 20 cm round sandwich tins and line the bases with baking paper.
- Weigh all your ingredients before starting so you can work quickly once the butter is creamed.
- Beat the softened butter and caster sugar together on medium-high speed for 4 minutes until the mixture is pale, fluffy, and doubled in volume.
- Add the eggs one at a time, beating for 30 seconds after each addition. Scrape down the bowl between eggs. Add the vanilla extract with the last egg.
- Sift the flour and salt over the batter. Fold in gently with a large metal spoon using slow figure-eight strokes until no dry flour is visible. Add the milk if the batter looks stiff - it should drop slowly off the spoon.
- Divide the batter equally between the two prepared tins. Use kitchen scales to confirm equal weights. Smooth the tops lightly with an offset spatula.
- Bake on the middle shelf for 20 to 22 minutes until the sponges are golden and spring back when you press the center lightly.
- Leave in the tins for 5 minutes, then turn out onto a wire cooling rack. Peel off the baking paper and leave to cool completely, about 15 minutes.
- Place one sponge layer flat side up on a serving plate. Spread the strawberry jam evenly to within 1 cm of the edge.
- Place the second sponge on top, flat side down, and press gently so the jam just reaches the edge.
- Dust the top with caster sugar through a fine sieve and serve at room temperature.
Notes
Tips for Success
- Cream the butter and sugar for a full 4 minutes until the mixture is pale and noticeably fluffy before adding eggs.
- Add eggs one at a time, beating well after each one to keep the batter from splitting.
- Fold flour in with a large metal spoon using a figure-eight motion to keep as much air in as possible.
- Divide the batter by weight across two tins for even layers – use kitchen scales, not guesswork.
- Test doneness by pressing the center lightly; the sponge should spring back completely with no indent.
Variations
- Swap strawberry jam for lemon curd and add a layer of whipped cream for a sharper filling.
- Add 2 tbsp cocoa powder to the flour and use cherry jam for a chocolate variation.
- Fold 50 g finely chopped freeze-dried raspberries into the batter for a fruited sponge with flecks of color.
Storage and Reheating
Store the filled cake under a cake dome or in an airtight container at room temperature for up to 2 days. The jam will keep the sponge layers moist without making them soggy if the jam is thick enough.
For longer storage, refrigerate for up to 4 days. Take it out 30 minutes before serving so the crumb softens back to room temperature.
The unfilled sponge layers freeze well. Wrap each layer tightly in cling film and freeze for up to 2 months. Thaw at room temperature for 1 to 2 hours before assembling.
Serving Suggestions
Dust the top with caster sugar just before serving rather than icing sugar – it gives a slightly sparkly, old-fashioned finish that holds up better without dissolving into the sponge.
Serve with a pot of strong British tea, ideally Earl Grey or a good Assam. A spoonful of clotted cream on the side is not traditional but it is very welcome.
For a more generous dessert, add a layer of lightly whipped double cream between the sponges alongside the jam, the way it’s done with almond sponge and vanilla buttercream in a classic British afternoon tea spread. Keep slices to about 2 to 3 cm thick so the filling stays together on the plate.
FAQ
Why did my jam sponge sink in the middle?
The most common cause is opening the oven door in the first 15 minutes, which causes the structure to collapse before it sets. Under-baking or too much baking powder can also cause a sunken center.
Can I use plain flour instead of self-raising flour in a jam sponge?
Yes. Add 2 tsp of baking powder per 200 g of plain flour and sift them together twice before using. The result is almost identical to self-raising.
How do I know when a Victoria-style sponge is done baking?
Press the center of the sponge lightly with one finger – it should spring back with no indent left behind. The edges will also have pulled slightly away from the sides of the tin.
Can I fill the jam sponge the night before serving?
You can, but a very wet jam may soften the bottom layer overnight. Use a thick preserve and store the assembled cake in a cool spot or the fridge, then bring to room temperature before slicing.
Is old fashioned jam sponge cake the same as a Victoria sponge?
Essentially yes – a classic Victoria sponge is a jam sponge using equal weights of butter, sugar, eggs, and flour. Some older versions skip the cream filling and just use jam, which is the original format.
How do I make this jam sponge dairy free?
Replace the butter with a plant-based block butter like Stork or Naturli. Avoid spreadable margarine as the higher water content can make the crumb heavy.
