Polish Chocolate Block Recipe

You can make chocolate block at home using straightforward proportions. Blok czekoladowy is a famous no-bake treat in Poland.

Ingredients

400 g full-cream powdered milk
200 g butter
150 g sugar
125 ml water
4 tbsp cocoa powder
200 g butter biscuits
50 g nuts

Step-by-step preparation

Line a loaf tin with baking paper and break the biscuits into chunks.
Heat the butter, water, sugar, and cocoa until dissolved, then let cool slightly.
Add the powdered milk in portions, stirring until smooth, then fold in biscuits and nuts.
Transfer to the tin and chill in the refrigerator for at least 4 hours.

Time and servings

Time: 25 minutes active prep plus chilling. Servings: 12 slices.

Practical tips and variations

Use full-cream milk powder, not granulated coffee creamer.
Add powdered milk gradually while stirring out any lumps.
Slice with a warm, dry knife.

Preparing smooth batter without lumps

Before starting, weigh out the powdered milk into a large bowl. If you spot compact clumps, break them down with a spoon or pass the powder through a sieve. Always use full-fat whole milk powder rather than granulated coffee whitener: these products have distinct compositions and behave differently in dessert mixtures.

Warm the butter, water, sugar, and cocoa powder over gentle heat, stirring regularly. Remove the pot from heat as soon as butter and sugar melt and cocoa blends smoothly into the liquid. Boiling is not required. Let the mixture cool until lukewarm while remaining liquid. If any dry cocoa dots float on top, whisk them smooth before introducing milk powder.

Incorporate the milk powder in small batches into the warm liquid, stirring thoroughly after each addition. You can start with a balloon whisk and switch to a sturdy wooden spoon as the mixture thickens. Scrape the sides and base of the pot diligently. The final mass should be dense and uniform. Only then fold in the broken biscuits and chopped nuts, coating all pieces evenly.

Biscuits, nuts, and tin preparation

Break biscuits by hand into irregular pieces. Fine crumbs will blend into the chocolate fudge, while bigger chunks create an attractive mosaic pattern in every cross-section. Avoid grinding them to dust if you want distinct crunchy pockets. Chop nuts roughly; you can choose one type or a mix. Verify that everyone sharing the dessert can safely consume nuts.

Line a rectangular loaf tin with parchment paper, leaving generous overhang on the long sides. This makes lifting out the chilled block effortless. Press the mixture firmly into the tin with a spoon, especially into the corners. Smooth the top. Firm pressing removes air pockets so slices hold their shape cleanly when cut.

Refrigerate the tin for at least four hours. Chilling time varies depending on the block thickness and initial temperature. Check that the core feels solid to the touch before slicing. If the centre feels soft, return it to the fridge for longer.

Slicing and storage

Lift the block out of the tin using the parchment overhang and set it on a cutting board. Warm a sharp knife in warm water, then wipe it completely dry. Cut with firm, even pressure straight through the loaf. Wipe the blade clean between cuts, especially if biscuit crumbs cling to the edge. If thin slices crumble around large biscuit chunks, cut slightly thicker portions.

Keep the finished chocolate block refrigerated in a sealed container or wrapped well. Do not leave it at warm room temperature for long, as softening butter causes the dessert to lose firmness. Before serving, you can bring it out for a few minutes to make cutting easier, then return the remaining portions to the fridge.

If you prefer a nut-free version, leave them out or replace them with extra biscuits. You can also mix in a small handful of chopped dried fruit. Keep additions balanced: the chocolate mixture must coat every piece securely so the block compresses and slices neatly.

FAQ

Does chocolate block need to be baked?

No, it is a no-bake dessert that sets entirely through refrigeration.

What can replace the nuts?

You can omit nuts entirely or add more biscuits.

Why is the block too soft?

Check if it chilled long enough in the refrigerator, especially in the thickest middle section. A deep block takes longer to set than a shallow one. If the mixture was warm when transferred to the tin, it also requires extra chilling. For future batches, measure water and butter accurately and mix the milk powder thoroughly in batches. A properly chilled block lifts out cleanly and slices without spreading.