Roasted Tomato Bisque

INGREDIENTS

• 2 1/2 lb. plum tomatoes, halved lengthwise
• 1 1/4 tsp. kosher salt, plus more, to taste
• Freshly ground pepper, to taste
• 1 tsp. extra-virgin olive oil
• 1 small yellow onion, chopped
• 1 small garlic clove, minced
• 1 tsp. sweet paprika
• 1 cup water
• 4 tsp. light sour cream
• 4 tsp. chopped fresh flat-leaf parsley