Sticky date slice

Ingredients

• 2 cup pitted dates, chopped
• 1 cup water
• 1/2 cup brown sugar
• 90 gram butter, chopped
• 1/4 cup maple syrup
• 1 teaspoon bicarbonate of soda
• 3 eggs, lightly beaten
• 1 3/4 cup self-raising flour
• 2 teaspoon ground cinnamon
• 1 teaspoon ground ginger
• Caramel icing
• 60 gram butter
• 2 tablespoon sour cream
• 1 1/2 cup icing sugar mixture, sifted
• 2 teaspoon vanilla extract