Garlic Bread Chelsea Buns with Lemon Cream Cheese Frosting | The Signature Series

These garlic bread Chelsea buns are a soft, enriched dough made with a tangzhong for an exceptionally tender crumb, rolled around a smoked harissa butter made with two types of garlic — one whole bulb slow-roasted until soft and sweet, one raw and punchy — scattered with grated mozzarella and mature cheddar before being rolled into a tight spiral, cut into twelve and baked until gorgeously golden. The cream cheese frosting that goes on top is savoury — lemon zest, salt and black pepper — because sweet buns shouldn't get to have all the fun, and because the cool, tangy cream cheese against a warm, cheesy, garlicky bun is one of the best things that has happened in this kitchen in a very long time. This is episode four of The Signature Series, inspired by the garlic bread signature challenge on The Great British Bake Off.

Why I Created This Recipe

This week’s Great British Bake Off signature challenge was garlic bread, with free rein on everything else. Which meant, naturally, that I crammed in as much garlic and cheese as it is humanly possible to put into a bun.

The Chelsea bun/cinnamon roll format felt immediately right — the spiral shape means the garlic butter, cheese and harissa are distributed in layers through every single slice rather than just sitting on top, and the enriched dough gives a softness and richness that a standard bread dough simply cannot match. The tangzhong technique takes that softness even further, producing a dough that stays tender for days rather than going stale by the following morning.

The two-garlic approach is what makes the filling reaaaally good. Slow-roasted garlic — a whole bulb, wrapped in foil and left in the oven for an hour — loses its sharpness entirely and becomes soft, sweet and almost jammy, with a depth and mellow sweetness that raw garlic cannot provide. The three raw cloves grated in alongside it add the punchy, aromatic hit that you want from a great garlic bread. Together they give a flavour that is complex, rounded and deeply garlicky without being one-dimensional.

About The Signature Series

The Signature Series is a series on One Pot One Portion running throughout the current series of The Great British Bake Off. Each week I share the bake I would make for that week’s signature challenge — if I were in the tent, which sadly I am not. This garlic bread Chelsea bun is episode four in the series.

What Is a Tangzhong and Why Does It Matter?

Tangzhong is a bread-making technique used in both China an Japan, in which a small amount of flour is cooked with liquid until it forms a thick, gelatinous paste before being incorporated into the main dough. It is used widely in milk breads and has become increasingly adopted in enriched bread recipes for a very good reason: it produces a noticeably softer, more tender crumb that stays that way for considerably longer than a standard dough.

The science behind it is straightforward. When flour and liquid are heated together and cooked, the starch granules in the flour absorb the liquid and swell — a process called gelatinisation. The gelatinised starch can hold significantly more moisture than raw starch, and when this paste is added to the main dough it introduces a reservoir of pre-absorbed liquid that stays locked into the crumb structure during and after baking. The result is a dough that is softer, more pillowy and more resistant to staling than one made without it.

For a Chelsea bun that you want to be pulling apart in soft, tender sheets rather than sawing through, the tangzhong is not a complicated extra step — it is the step that makes the difference. It takes about five minutes and adds a level of softness to the finished bun that is very difficult to achieve any other way.

A Note on Smoked Harissa

Smoked harissa paste is the recommended choice for this recipe — a North African chilli paste made with roasted red peppers, hot chillies, garlic and spices, with an additional layer of smokiness that adds a wonderful depth to the garlic butter. It is available in most major UK supermarkets, usually in the world food or condiments aisle. Rose Harissa is more widely available and works perfectly well here — it is slightly milder and more fragrant, but the smokiness will be less pronounced. Regular harissa paste is a perfectly good substitute if smoked is not available — just be aware that the smoky, slightly charred quality of the filling will be more subtle.

Two tablespoons of harissa paste gives a warming, well-spiced butter with a noticeable but not overwhelming heat. Reduce to one tablespoon for a milder result.

My Top Tips for the Perfect Garlic Bread Chelsea Buns

• Make the tangzhong first and let it cool completely before adding it to the main dough. A hot tangzhong added to the dough can begin to cook the egg and affect the yeast activity — it should be warm at most when it goes in.
• When heating the milk and butter for the dough, do not let the milk boil. Boiling milk can affect the yeast — heat it only until the butter has melted, then remove from the heat immediately. Let the mixture cool to lukewarm — around 35–40°C — before adding the yeast, which is the temperature at which yeast is most active without being harmed.
• Knead for the full fifteen minutes and use the windowpane test to confirm the gluten is fully developed. Stretch a small piece of dough between your fingers — if it stretches into a thin, translucent membrane without tearing, it is ready. If it tears, keep kneading. See the cheddar and jalapeño bagels post for a full explanation of the windowpane test.
• Start roasting the garlic at the same time as or just before the first rise — the garlic takes an hour and the dough takes an hour, so they can happen simultaneously. This is the most efficient use of your time in this recipe.
• Make sure the butter for the filling is properly softened before mixing in the garlic and harissa. Cold butter will not spread evenly over the dough and will tear it as you try to work with it. Leave it out of the fridge for at least an hour before you need it.
• Spread the garlic butter generously and right to the edges of the dough. Any unbuttered areas at the edges will be dry and flavourless in the finished bun.
• Scatter the mozzarella and cheddar evenly over the butter before rolling. The two cheeses need to be distributed throughout the layers — uneven scattering means some bites will have no cheese.
• Roll the dough tightly and confidently. A loose spiral will unravel during the second prove and baking, and the layers will separate rather than staying cohesive. Start from the long edge and roll firmly away from you.
• Use a sharp knife or unflavoured dental floss to cut the buns. A blunt knife will compress and flatten the spiral as it cuts; a sharp knife or a piece of dental floss pulled underneath and crossed over the top gives a clean, even slice. Cut into twelve even pieces.
• Pack the buns into the tin touching each other — they should be snug. This prevents them from spreading outwards during the second prove and baking, encouraging them to rise upwards instead and giving the characteristic tall, pull-apart shape of a classic Chelsea bun.
• Spoon the cream cheese frosting over the buns while they are still slightly warm — not hot, but not completely cold. Warm buns allow the frosting to soften slightly and spread beautifully; completely cold buns make it harder to apply evenly and the frosting can sit in a stiff layer rather than melting gently into the top.

Storage

Storing

Store the buns covered at room temperature for up to two days — the tangzhong keeps them softer for longer than a standard enriched dough. After two days they are best warmed briefly in a low oven to refresh. Store any leftover cream cheese frosting separately in the fridge and spoon over freshly before eating.

Reheating

Warm individual buns in the oven at 160°C for 8–10 minutes until heated through. Add the cream cheese frosting after reheating rather than before — it is much better applied to a warm bun fresh from the oven than reheated with the bun.

Freezing

These buns freeze well once baked and cooled — freeze without the frosting, wrapped tightly in cling film (plastic wrap), for up to three months. Defrost at room temperature then warm in the oven as above before adding fresh frosting. The unbaked, shaped buns can also be frozen after the second prove — freeze on the tray until solid, then transfer to a freezer bag. Bake from frozen at 180°C, adding around 8–10 minutes to the baking time.

Frequently Asked Questions

What is a tangzhong and do I really need it?

A tangzhong is a cooked flour and milk paste that is added to enriched bread doughs to produce a noticeably softer, more tender crumb that stays soft for longer. It takes around five minutes to make and makes a very real difference to the finished bun — the difference between a bun that is pillowy and tender and one that is merely good. It is not complicated, and it is worth doing. See the full explanation in the section above.

Can I make these without a stand mixer?

You can knead by hand, but it will take considerably longer — at least 20–25 minutes of firm, consistent kneading to develop the gluten fully in an enriched dough this size. Use the windowpane test rather than the timer to confirm the dough is ready. A stand mixer is strongly recommended here.

How do I know when the garlic is properly roasted?

The cloves should be completely soft — they should yield to gentle pressure with no resistance — and a deep golden colour. The papery skin around the bulb will be darkened and slightly charred at the edges, which is fine and expected. If the cloves are still firm after an hour, rewrap and return to the oven for another 10–15 minutes. The time will vary depending on the size of the bulbs.

Can I make the dough the night before?

Yes — after the first knead, place the dough in a lightly oiled bowl, cover tightly and refrigerate overnight for a slow, cold prove rather than the one-hour room temperature rise. Remove from the fridge the following morning, allow to come to room temperature for 30 minutes, then roll, fill and shape as per the recipe. A cold prove develops a slightly more complex, subtly tangier flavour in the finished bun.

Why is the cream cheese frosting savoury?

Because this is a savoury bake. The lemon zest, salt and black pepper frosting is cool, tangy and fresh, and it is exactly the right counterpoint to the warm, rich, garlicky bun beneath it. Sweet buns do not get to have all the fun.

What size tin should I use?

A 23x33cm deep baking tray or roasting tin fits twelve buns comfortably, with the buns touching each other — which is deliberate, as it encourages them to rise upwards rather than spreading outwards during the second prove and baking.