SUGARY SWEET POTATOES

4 medium sweet potatoes
1cup orange juice
1tbsp orange zest
1/3cup brown sugar
1tbsp cornstarch
3tbsp butter
pinch of salt
1tbsp rosemary

Cut each potato in 4 pieces.Boil them in water.Drain the water,peel them and place in a baking dish.
Melt the butter in a microwave.After melting,add the dry ingredients to it.Add the orange juice while stirring.
Pour the mixture in a pot or pan and boil until thickens.
After thickening,pour the mixture over the sweet potatoes.
Bake on 220C degrees for 50min.Sprinkle the rosemary on the top of them and serve.