In a stand mixer bowl combine 4 ½ cups bread flour, 3 tsp instant yeast, ½ cup caster sugar, 2 tsp cinnamon, 2 tsp allspice, ½ tsp salt and 1 ½ cups sultanas.
Wet mix
Melt 50 g butter in a small saucepan over medium heat, on induction level 5. Add 1 ½ cups milk and heat for 1 minute, or until lukewarm.
First prove
Add warm milk mixture,1 egg and zest from 1 orange into flour mixture. In a stand mixer with the dough hook attached, mix the dough until it almost comes together, and then knead for 8 minutes. Turn dough out onto a floured surface. Knead for an additional 1 minute, or until dough is smooth. Place into a lightly oiled bowl and place into oven on prove dough and prove for 30 minutes or until dough doubles in size.
Second prove
Line a universal tray with baking paper. Punch dough down to its original size. Knead for 30 seconds on a lightly floured surface until smooth. Divide into 16 even portions and shape each portion into a ball. Place balls onto prepared universal baking tray, about 1 cm apart. Place back into the oven on prove dough and prove for 30 minutes, or until buns double in size.
Crosses
In a small bowl mix ½ cup flour and 5 tbsp water until a thick runny paste forms. Spoon into a round 3 mm piping bag or small ziplock bag then snip the corner and pipe crosses onto the buns.
Bake
Preheat the combi steam oven on conventional at 170 °C with 35% steam or level 1 steam. Place into the combi steam oven on shelf level 1 in a 45 cm oven, or shelf level 2 in a 60 cm combi steam Pro oven. Bake for 20-25 minutes, or until buns are cooked through.
Glaze
Meanwhile, place 1 tbsp apricot jam and 2 tsp water in a small bowl, and microwave for 30 seconds. Mix to combine. Brush buns with jam mixture while warm. Allow to cool to warm before serving.
Notes
You can make mini hot cross buns by dividing the dough into 32 and reducing the cooking time.
Mixed spice can be replaced with a combination of cinnamon, nutmeg and allspice.