Adjust heat to slow simmer and cook uncovered until
carrots and apple are tender, about 30 minutes / Turn off heat and allow mix to cool a bit / Purée mixture
in food processor,
in small batches
in the blender, or use an immersion blender
in the
sauce pan / Purée until smooth and silky / Add a little more water or stock if needed to achieve desired consistency / Taste and adjust seasoning / Optional — stir
in cream and a little more butter before serving.