Line a baking pan with foil and place strawberries in a single layer. Use enough foil to fold up sides so the strawberry juice does not escape. Roast in oven until they start to caramelize, about 15 minutes.
Add remaining ingredients to a medium sized sauce pan and bring to a boil. Add roasted strawberries and juice. Reduce the heat and simmer for 15 minutes. Remove from heat and let cool for about 20 minutes. Add the cilantro and puree in a food processor or blender.