Heat grill to high. Set tomatoes and jalapeño on cooking grate and grill without turning until charred and bubbly on the bottom, with some color on top, about 15 minutes.
Transfer vegetables to a blender and add remaining ingredients. Whirl until well blended, about 1 minute.
Servings 0
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.