Gluten-free Cinnamon Rolls (German Franzbrötchen)

Ingredients

• 30 g yeast, fresh
• 300 ml milk, lukewarm
• 75 g sugar
• 450 g gluten-free flour mix, (e.g. Schär Mix B Bread)
• 40 g white rice flour
• 1 tsp psyllium husk powder
• 1 tsp xanthan gum
• 1 pinch salt
• 75 g butter, softened
• 1 egg yolk
• extra gluten-free flour, for dusting
• 50 g marzipan
• 100 g butter, softened
• 2 tbsp cinnamon
• 2 tbsp milk
• 2 tbsp sugar