In a saucepan, stir together the cooked rice, milk, sugar and vanilla. Bring to bubbling and reduce heat to medium and let cook for 15 to 20 minutes, or until the rice pudding has thickened.
Stir in the strawberries and let cook another 5 minutes. Add a dash of cardamom (optional).
If preferred, refrigerate to chill the rice pudding and serve the next day.
Ladle into serving bowls and add a swirl of heavy cream or half and half. Serve warm or chilled. Enjoy!