How to Make a Traditional Irish Coffee Slice — Layers of Puff Pastry, Cream and Coffee Icing

Sharing is caring!

There are certain baked goods that take you back instantly — a single bite that conjures the smell of a bakery, the glass case of creamy slices, and the particular quiet joy of a proper Irish afternoon treat. The coffee slice is one of those. Layers of golden, flaky puff pastry sandwiching whipped cream, topped with silky coffee fondant icing decorated with an intricate feathered chocolate pattern — it is, in every sense, a classic.

Chris from The Irish Baker Abroad has a special connection to this recipe. His grandfather, Willie Horan, was a Dublin baker who spent his career turning out trays of these beauties — coffee slices, vanilla slices, custard slices — the full range of traditional Irish “cream slices” that were a staple of every good Irish bakery for generations. When Chris makes coffee slices, he is not just following a recipe. He is carrying on a tradition.

What Is an Irish Coffee Slice?

The coffee slice belongs to a family of confections sometimes called “cream slices” or “mille-feuille” — layered pastry desserts that were the pride of any self-respecting Irish bakery from the 1950s through to the 1990s. The name refers to the coffee fondant icing that sits on top, finished with dark chocolate piped in lines and dragged into a feathered or spiderweb pattern that is as much a work of craft as it is decoration.

Unlike their French cousin the mille-feuille (which uses custard cream), the Irish coffee slice typically features lightly whipped double cream as its filling. Some versions include a thin layer of raspberry jam between the pastry and cream — a little jammy sweetness to balance the bitter edge of the coffee icing. Others keep it pure cream. Both are correct. Both are delicious.

What makes Chris’s version special is the puff pastry itself. Rather than buying ready-rolled sheets, he uses a half-block of proper puff pastry, rolls it to a precise 24 x 38 cm rectangle, and follows a technique his grandfather knew well: chilling the pastry before baking so that the cold butter creates a steam shock in the hot oven, lifting each individual layer into that impossibly light, shattering crispness that defines a great cream slice.

Irish Coffee Slice — Full Recipe

Ingredients

• ½ block puff pastry (rolled to 24 x 38 cm)
• Approximately 200g coffee fondant icing
• 50g dark chocolate, melted (for decoration)
• Raspberry jam, to taste (optional)
• 300ml double cream, chilled
• Flaked almonds, for decoration (optional)
• Maraschino cherries or small red berries (optional)

Method

1. Prepare the pastry: Dust your work surface with a little flour. Take half a block of puff pastry and roll it out to a rectangle of approximately 24 x 38 cm. Trim the edges cleanly — straight lines make for better-looking slices at the end.
2. Transfer to the tray: Roll the pastry sheet loosely onto a rolling pin, then unroll it directly onto a baking tray lined with parchment paper. Prick the surface all over with a fork — this prevents uneven puffing.
3. Chill the pastry: Place the prepared tray in the fridge for 30 minutes. Meanwhile, preheat your oven to 210°C (190°C fan / Gas Mark 6). The chilling step is crucial: cold butter creates a dramatic steam explosion in the hot oven, lifting each layer of dough separately.
4. Bake: Bake the chilled pastry for 18–20 minutes, until it is a deep, even golden brown. The pastry should be well-puffed and crisp right through. Allow to cool completely on the tray.
5. Split the pastry: Using a sharp serrated knife, carefully cut the baked pastry sheet horizontally into two equal halves — top and bottom. A gentle sawing motion will give you a clean cut without shattering the layers. This is the trickiest step: take your time.
6. Ice the top layer: Warm the coffee fondant icing briefly in the microwave until it becomes pourable but not runny. Spread it over one half of the pastry using a palette knife, working quickly and smoothly for an even finish.
7. Create the feathered pattern: Spoon the melted dark chocolate into a small piping bag or use a teaspoon to pipe parallel horizontal lines across the coffee icing, spacing them about 2 cm apart. Immediately draw a toothpick or skewer vertically through the lines in alternating directions — first downward, then upward — to create the classic feathered or spiderweb pattern. Work quickly before the icing sets.
8. Whip the cream: Pour the cold double cream into a cold bowl (chilling the bowl first helps). Whisk to stiff peaks. Transfer to a piping bag fitted with a star or round nozzle.
9. Assemble: If using jam, spread a thin layer over the uniced (base) pastry half. Pipe the whipped cream generously over the base, then use a palette knife to level it to an even layer. Before placing the top, lightly score the coffee icing into 10 individual rectangles — this makes slicing much cleaner.
10. Slice and finish: Place the decorated top over the cream layer and press down gently. Using a sharp knife, slice all the way through each portion, wiping the blade clean between cuts. Top each slice with a small swirl of additional cream, a scattering of flaked almonds, and a cherry or berry if you like.

Chris’s Expert Tips

Chris has a few techniques that elevate these slices from good to extraordinary:

• Always chill before baking. The 30-minute rest in the fridge is non-negotiable. The cold butter creates the steam needed for proper lamination — without it, you get flat pastry, not flaky layers.
• Warm the icing gently. Coffee fondant that’s too cold tears the pastry surface when you try to spread it. A few seconds in the microwave makes it flow smoothly across the pastry.
• Work fast on the feathering. The chocolate decoration needs to be done while the coffee icing is still wet. Have your chocolate ready in a piping bag before you start icing.
• Cold bowl for whipping cream. Chilling your mixing bowl in the freezer for 10 minutes before whipping double cream makes a noticeable difference to the volume and stability of the finished cream.
• Clean knife, clean slices. Wipe the knife blade with a clean, damp cloth after every single cut. This keeps the cream white and the layers distinct in each slice.

Variations and Alternatives

Chris’s grandfather Willie made more than just coffee slices. Once you’ve mastered the base technique, the same method opens up a whole world of Irish bakery classics:

• Vanilla slice: Replace the coffee icing with vanilla-flavoured white fondant. The feathering technique is identical; only the flavour changes.
• Custard slice: Swap the whipped cream for a thick, set vanilla custard cream (crème pâtissière). This is a more substantial, richer filling — closer to the French mille-feuille.
• Chocolate slice: Use a dark chocolate fondant for the topping and pipe white chocolate in the feathered lines. A crowd favourite for children’s birthday parties in Irish households for decades.
• No-jam version: The jam layer is entirely optional. Many people (Chris included) prefer the clean, pure cream flavour without the added sweetness.

Where to Find Coffee Slices in Ireland

If you want to taste the real thing before attempting the recipe at home, you’ll still find proper coffee slices in traditional Irish bakeries and certain old-school café settings. They tend to be found in the kind of establishments where the display case is still glass and the scones are still made from scratch each morning.

In Dublin, look to the older parts of the city for traditional bakeries that still stock them. In country towns across Ireland — Athlone, Mullingar, Kilkenny — you’ll find them in the small independent bakeries that have been serving the same families for three and four generations. They are never in the supermarket. That’s part of their charm.

The coffee slice belongs to the same lineage as the traditional Irish apple tart, the millionaire shortbread, and the Irish Christmas cake — bakes that define a particular era of Irish life and still carry enormous emotional weight for anyone who grew up with them.

Watch the Full Tutorial

To see every step in action — including Chris’s technique for the feathered chocolate decoration, which is one of those skills that is much easier to watch than to read — watch the full tutorial below:

Frequently Asked Questions

Can I use ready-rolled puff pastry instead of a block?

Yes, absolutely. If you’re using a pre-rolled sheet, simply trim it to 24 x 38 cm, transfer to a lined baking tray, prick all over, and follow the same chilling and baking steps. The result will be very similar, though some bakers argue that starting from a block gives you slightly better layers since you can control the thickness more precisely.

Where do I get coffee fondant icing?

Coffee fondant icing is available from specialist baking suppliers and some larger supermarkets in Ireland and the UK. Brands like Renshaw make a fondant that works well for this. If you can’t find coffee-flavoured fondant, you can make a simple coffee glace icing by mixing strong espresso or coffee essence into sieved icing sugar until you reach a thick, spreadable consistency — though this won’t give you the same glossy finish as proper fondant.

How long do coffee slices keep?

Coffee slices are at their best on the day they’re made, when the pastry is at peak crispness. They can be stored in an airtight container in the fridge for up to 2 days, but the pastry will soften as it absorbs moisture from the cream. For the crispest results, assemble the slices as close to serving time as possible — you can bake and store the plain pastry sheets a day ahead, then assemble just before serving.

Can I freeze coffee slices?

It’s not recommended to freeze assembled coffee slices — the cream doesn’t freeze well and the pastry will lose its texture on thawing. However, you can freeze the baked, unfilled pastry sheets for up to one month. Wrap them carefully between sheets of parchment paper and thaw at room temperature. Re-crisp in a low oven (160°C) for 5 minutes if needed before assembling.

A Slice of Irish Bakery History

The coffee slice is one of those quietly beloved Irish foods that rarely makes it into travel guides or food features, yet every Irish person of a certain age knows exactly what it is and exactly where they first tasted one. It is the slice your grandmother brought back from the bakery on a Saturday. The one sitting under a glass dome at the counter of a small café in a country town. The one that disappeared from supermarket shelves but refused to vanish from memory.

When Chris from The Irish Baker Abroad makes coffee slices, he honours his grandfather Willie Horan’s legacy directly. Willie was a Dublin baker who made these slices in the era when every small Irish town had its own bakery and the glass case of cream pastries was a daily feature of local life. That tradition survived in families long after the bakeries themselves began to disappear, passed down not through written recipes but through memory, touch, and the quiet pleasure of making something beautiful from simple ingredients.

This recipe is your invitation to continue that tradition. Whether you are making these for the first time or recreating a taste from childhood, you will find that the coffee slice rewards patience and care with something genuinely extraordinary — a layered pastry that manages to be simultaneously light and rich, simple and elegant, and unmistakably, beautifully Irish.

For more traditional Irish baking recipes from The Irish Baker Abroad, explore Chris’s traditional Irish scones, his millionaire shortbread, and Guinness bread — all bakes that carry the same spirit of Irish home baking at its finest.

Secure Your Dream Irish Experience Before It’s Gone!

Planning a trip to Ireland? Don’t let sold-out tours or packed attractions spoil your journey. Iconic experiences like visiting the Cliffs of Moher, exploring the Rock of Cashel, or enjoying a guided walk through Ireland’s ancient past often sell out quickly—especially during peak travel seasons.

Booking in advance guarantees your place and ensures you can fully immerse yourself in the rich culture and breathtaking scenery without stress or disappointment. You’ll also free up time to explore Ireland’s hidden gems and savour those authentic moments that make your trip truly special.

Make the most of your journey—start planning today and secure those must-do experiences before they’re gone!

Sharing is caring!