Jam doughnut pull-apart challah

strong white flour (1 1/3 cups)

strong wholemeal flour (3/4 cup)

golden caster sugar (2.5 tbsp)

salt

margarine or butter (2 tbsp)

dry yeast (15g)

warm water (1/2 cup)

strawberry jam (or your favourite flavour)

vegetable oil

granulated sugar

ground cinnamon