Caramel Slice with SMARTIES Using our Best Ever Caramel Slice add a fun and colourful twist with SMARTIES Preheat oven to 180C/160C fan forced. Lightly grease a 18cm x 28cm slice pan and line with baking paper. Combine the flour, sugar and coconut in a bowl. Add the melted butter and mix well. Press mixture firmly into base of prepared pan. Bake for 15 to 20 minutes or until lightly browned. Set aside to cool.