Sift the flour into a large bowl. Add the yeast, sugar, salt and spices and mix well to combine.: You should notice the dry mix smelling faintly of cinnamon and all spice , which signals the spices are evenly distributed and will flavor the dough consistently. Mixing first prevents clumps of yeast or salt touching wet ingredients directly, which can inhibit yeast action. A common mistake is not sifting, which can lead to uneven pockets of spices or yeast; if you see clumps, break them up with your fingers before adding liquids. The texture should be powdery and uniform, not patchy.
Make a well in the centre and pour in the milk and butter. Stir the liquid into each other, then add in the egg. Mix with a wooden spoon then bring the dough together with your hands, pressing into it until it forms a sticky ball. (If the dough is too dry add a little water in tablespoon increments (up to 1/2 cup if needed) until the dough is just sticky to touch.): At this stage you will feel the transformation from dry to tacky, the bowl warming slightly as fats and proteins combine. The dough should be cohesive but still a little sticky, which means it will be soft and tender after baking. If it feels dry or crumbly, add water in tiny tablespoon increments, up to 1/2 cup; adding too much liquid at once is a common error and makes the dough overly slack. The aroma will shift as the egg and butter integrate, becoming richer and more fragrant.
Transfer dough onto a lightly floured surface and knead for 5-10 minutes until it becomes smooth and springy.: While kneading, listen for the soft scrape of dough against your surface and watch it change from shaggy to elastic. Your hands will pick up a faint sheen from the butter. Proper gluten development gives the dough a smooth surface and a bounce when pressed, which ensures a good crumb structure. Over kneading is rare by hand but can make the dough feel tight, while under kneading leaves it sticky and fragile; aim for a satiny texture that springs back when poked.
Transfer dough back into the bowl and cover with plastic wrap (or a clean, damp tea towel). Leave in a warm place to rise until doubled in size (about 1 hour depending on how warm the room is).: As the dough proofs, you will notice it growing and releasing a yeasty, slightly sweet scent. This rise creates air pockets for a light interior. If the room is cold, the rise can take longer, so patience is key. A common mistake is letting it overproof until it collapses, which causes dense buns, so check visually for about double volume rather than relying solely on time.
Lightly grease a large baking sheet or line with parchment paper. Set aside.: Preparing the tray ahead of shaping prevents delays that can deflate the dough. You should feel the smoothness of parchment under your palms and appreciate that the buns will transfer with minimal sticking. If you skip lining, buns may stick and tear when removed, so taking a minute now avoids frustration later.
Punch down dough and transfer onto lightly floured surface. Sprinkle with 3/4 of the chocolate chips and knead the dough for 2-3 minutes.: The act of punching down redistributes gases and evens the crumb; you ll hear a soft sigh as trapped air escapes. As you knead in the chocolate chips , they become embedded and form pockets of melted chocolate in the final bake. Be gentle, because aggressive handling can break up air pockets too much; if chips clump, gently fold rather than forcefully knead.
Divide dough into 12 or 15 even portions (depending on how many buns you need). Roll each piece into round smooth balls and arrange on baking sheet, leaving space between each bun to allow them to rise. Press remaining chocolate chips on top of each bun.: Rolling creates surface tension that helps buns rise tall and even, which you can observe as a smooth sheen on each ball. Pressing a few chips on top gives a pretty finish and guarantees some chips on the crust. A frequent misstep is making uneven portions, which results in inconsistent baking; use a scale or careful eyeballing to keep sizes uniform.
Cover with plastic wrap (or damp tea towel) and place in a warm place once again to prove for 20-30 mins, until doubled and just touching. Preheat oven to 400°F (200°C).: During this final proof you will see buns swell and edges begin to soften; they should be puffy and just touching. Preheating the oven ensures a strong initial oven spring, producing a lighter bun. If you skip preheating, the buns may bake unevenly and remain pale. Use visual cues, not just time, to judge readiness.
When oven is hot, bake buns for 20 minutes until they are golden brown and sound hollow inside when tapped.: As they bake, the kitchen will fill with a toasty aroma and the tops will turn an even golden brown. Tapping the base should produce a hollow sound, signaling they are cooked through. A common error is underbaking; if the center feels soft, give them a few more minutes while watching the color to prevent overbrowning. Proper bake time yields a crisp exterior and soft interior.
Melt the remaining chocolate in the microwave in 30 second increments until melted. Transfer chocolate to a ziplock bag and snip a small hole in a bottom corner (the larger the hole the wider the crosses will be).: Melted chocolate should be glossy and smooth, without grainy bits, indicating it s been heated gently. Using a bag lets you pipe neat crosses, and adjusting the hole size changes line thickness. Overheating chocolate is a common problem, which causes it to seize; if this happens, stir in a small amount of warm oil or discard and remelt carefully at lower power.
Allow buns to cool slightly and pipe crosses onto your buns. Allow them to set before glazing.: Cooling a bit prevents the piping from sliding off and keeps the crosses defined rather than melting into the crust. You ll see the chocolate hold shape as it firms, giving a classic cross look. Piping while buns are too hot will smear the design, so wait until they are warm but not piping hot.
Mix together the jam and warm water to combine, and brush the glaze evenly over each bun using a pastry brush.: Brushing the apricot jam glaze adds shine and a subtle fruit note, and the warmth helps it spread evenly over the surface. The finished buns should glisten and smell slightly fruity, which lifts the spice. If your glaze is too thin it won t hold, if too thick it will be sticky, so adjust with tiny water amounts for the right gloss.