Yeast croissants with sweet filling #1

Ingredients

• 500 g wheat flour
• 10 g dry yeast
• 100 g sugar
• 200 ml warm milk
• 100 g butter, melted
• 2 eggs
• pinch of salt
• zest grated from 1 lemon
• 200 g good quality jam/confiture of any flavour
• 100 g ground nuts (e.g. walnuts, hazelnuts)
• 100 g chopped dates
• 2 tbsp honey
• 1 teaspoon cinnamon
• 2 tbsp butter, melted (to spread on the croissants)
• Icing sugar (to sprinkle on the croissants)