The aroma of cinnamon, nutmeg, and citrus zest wafting through a kitchen is the universal signal that Easter is approaching. While the spiced dough and plump currants are essential components of a traditional hot cross bun, the defining feature is undeniably the pale, iconic cross etched across the top. For many home bakers, achieving that perfect, tidy cross is the most intimidating part of the process. Is it icing? Is it shortcrust pastry? How do you keep it from peeling off or becoming a blurry mess in the oven?
Understanding the mechanics of the cross is just as important as the dough itself. The cross isn’t just a decoration; it’s a structural element that needs to bake at the same rate as the bread while maintaining its distinct shape and color. Whether you are a seasoned baker or a first-time holiday enthusiast, mastering the paste and the piping technique will elevate your buns from basic rolls to bakery-quality masterpieces.
Choosing Your Cross Method: Flour Paste vs. Icing
There are two primary ways to approach the cross on a hot cross bun, and the choice depends entirely on when you apply it and what texture you prefer.
The Traditional Flour Paste Method
The most common method, and the one used by professional bakeries, involves a simple flour and water paste. This mixture is piped onto the buns before they go into the oven. As the buns bake and expand, the flour paste sets into a firm, biscuity texture that adheres to the crust. Because it is baked, it becomes part of the bun’s structure and doesn’t melt or smudge when handled.
The Modern Sugar Icing Method
Some modern variations prefer a sweet, white icing made from powdered sugar and milk or lemon juice. Unlike the flour paste, icing is applied after the buns have baked and cooled completely. This results in a much sweeter, brighter white cross that sits on top of the glaze. While delicious, it lacks the traditional “baked-in” look and can be a bit more fragile when the buns are toasted.
Creating the Perfect Flour Paste Consistency
If you are aiming for the authentic look, the flour paste is your best friend. The secret to a successful cross lies in the ratio of flour to liquid. If the paste is too thin, it will run down the sides of the buns and lose its definition. If it is too thick, it will be impossible to pipe smoothly and may crack during the baking process.
To make a standard batch, you will need approximately 1/2 cup of all-purpose flour and about 4 to 5 tablespoons of water. Some bakers like to add a teaspoon of vegetable oil to give the paste a slight sheen and more elasticity.
To mix, slowly add the water to the flour, whisking constantly until you achieve a consistency similar to thick toothpaste. It should be fluid enough to flow through a nozzle but stiff enough to hold its peak. If you find the paste is too translucent, adding a pinch of cornstarch can help achieve that bright, opaque white look that stands out against the golden-brown bread.
The Art of Piping the Crosses
Precision is key when it is time to decorate. You don’t need professional equipment to do this well, but a little bit of technique goes a long way.
Preparing Your Piping Bag
You can use a professional piping bag with a small round nozzle (about 3mm is ideal), or a simple heavy-duty freezer bag with the corner snipped off. If using a plastic bag, ensure the hole is very small to start; you can always make it bigger, but you can’t make it smaller once you’ve cut it.
The Continuous Line Technique
One mistake beginners make is trying to pipe a cross on each individual bun one by one. This often leads to messy “starts” and “stops” on every roll. Instead, arrange your proofed buns close together on the baking sheet so they are almost touching.
Hold the piping bag at a 90-degree angle to the buns. Start at the very edge of the first row and pipe one long, steady line across the center of all the buns in that row. Repeat this for all horizontal rows. Then, turn the tray and pipe long, continuous lines vertically across the rows. This creates a beautiful, uniform grid that looks professional and saves an immense amount of time.
Timing the Application
Timing is everything when learning how to make the cross on hot cross buns. The paste must be applied after the final proofing but before the buns go into the oven.
If you pipe the crosses before the buns have finished rising, the expansion of the dough will stretch the paste too far, causing the crosses to break or look “shattered.” Wait until the buns have doubled in size and pass the “poke test” (where the dough springs back slowly when lightly touched). Once they are ready for the heat, pipe your crosses and slide the tray immediately into the oven, usually preheated to 375°F or 400°F depending on your specific recipe.
Troubleshooting Common Crossing Issues
Even the best bakers run into trouble occasionally. Here is how to fix the most common issues with hot cross bun decoration.
The Crosses are Peeling Off
If your crosses are lifting away from the bun after baking, it is likely because the surface of the dough was too dry or too floured before you piped. Ensure the buns aren’t covered in excess flour from the shaping process. Some bakers lightly brush the buns with an egg wash before piping to act as a “glue,” though this can sometimes make the paste slide if the egg wash is too thick.
The Crosses Look Grey or Dull
A dull cross is usually the result of using too much water in the paste or over-baking. To keep them bright, ensure your paste is thick and opaque. If you are using a very high oven temperature, like 425°F, the flour in the paste may start to brown. To prevent this, you can cover the buns loosely with foil for the last five minutes of baking if the bread is browned but the crosses are starting to take on too much color.
The Lines are Wiggly
Shaky hands are the enemy of a straight cross. To stabilize your piping, use your dominant hand to squeeze the bag and your non-dominant hand to guide the tip. Keep the tip about half an inch above the buns rather than dragging it directly on the dough. This allows the paste to “drape” over the curves of the rolls, resulting in much smoother lines.
Enhancing the Appearance with Glaze
Once the buns come out of the oven with their perfectly baked crosses, the final step is the glaze. A traditional glaze is made from a simple syrup (equal parts sugar and boiling water) or warmed apricot jam strained of any fruit pieces.
Apply the glaze while the buns are still piping hot. This creates a beautiful, sticky shine that contrasts brilliantly with the matte finish of the flour cross. The glaze also helps to soften the crust, keeping the buns fresh for longer. Be careful not to drench the buns; a light brushing is all you need to make the colors pop.
Alternative Materials for the Cross
While flour and water is the gold standard, some cultures and modern kitchens experiment with different materials to achieve the cross.
Shortcrust pastry is a popular alternative in some regions. Bakers roll out thin strips of pastry and lay them over the buns. This creates a much richer, buttery cross, though it requires more labor than piping a paste. For a gluten-free option, you can substitute the all-purpose flour in the paste for a gluten-free flour blend or even a thick mixture of cornstarch and water, though the texture will be slightly more brittle.
For those who want a savory twist on the hot cross bun, the cross can be made using a mixture of flour and parmesan cheese or a thick garlic-herb paste. This works beautifully if you have modified the dough recipe to exclude the sugar and dried fruits.
FAQs
Can I use milk instead of water for the flour paste?
Yes, you can use milk instead of water to create the flour paste. Milk adds a bit of protein and fat, which can make the paste slightly richer and more tender. However, keep in mind that the sugars in the milk may cause the cross to brown more quickly in the oven compared to a water-based paste. If you want a stark white cross, water or a water-and-cornstarch mix is usually the better bet.
My flour paste is too runny, how do I fix it?
The easiest fix is to simply whisk in more flour, one teaspoon at a time, until the desired thickness is reached. Do not try to fix it by letting it “sit out” to dry, as this will only create a skin on the top and won’t change the internal moisture level. Always aim for a consistency that feels like heavy Greek yogurt.
Should I pipe the crosses before or after egg washing the buns?
This is a matter of personal preference, but most professionals pipe after the egg wash. Applying the egg wash first gives the bun a consistent golden shine. If you pipe the cross first and then egg wash over it, you risk smearing the paste or dulling the white color of the cross with the yellow tint of the egg.
How do I make the crosses perfectly straight?
The “Grid Method” is the best way to ensure straight lines. Instead of treating each bun as an isolated circle, treat the entire tray as one canvas. By piping long, continuous lines from one side of the baking sheet to the other, the natural tension of the paste helps keep the line straight. Using a steady, medium pressure on the piping bag is also vital.
Can I make the buns ahead of time and pipe the crosses later?
If you are using the flour paste method, you must pipe the crosses right before the buns go into the oven. You cannot bake the buns, let them cool, and then add the flour paste, as the paste needs the high heat of the oven to “cook” and set. If you need to make the buns ahead of time and decorate them later, you should use the icing method (powdered sugar and milk) once the buns are completely cool.