Preheat the oven to 275 degrees F. Line a baking sheet with parchment paper.
In a bowl, toss the tomatoes with 1 tablespoon olive oil, salt, and pepper. Place the tomatoes, cut side down, on the prepared baking sheet and drizzle 1 tablespoon water over the tomatoes. Bake in the oven for 1 hour.
Remove from the oven. Carefully peel off the skins and discard. Flip the tomatoes over so they're cut side up, and place back in the oven until the tomatoes are shriveled but not dry, another 30 to 60 minutes. Remove the tomatoes from the oven and allow to cool slightly.
Meanwhile, in a large saucepan, saute the onion in the remaining 1 tablespoon olive oil over low heat until very soft, 10 to 12 minutes. Add the garlic and herbes de provence and cook until fragrant, another 1 to 2 minutes. Add the stock and remaining 1/2 cup water and bring to a simmer. Simmer 15 minutes. Cool slightly.
In a blender, puree the tomatoes (including any cooking liquid on the baking sheet) and the stock mixture until very smooth. You may need to work in batches. Strain through a fine sieve if a very smooth texture is desired. Pour the soup back into the saucepan, season with salt and pepper, and heat gently. To serve, ladle into cups or bowls and top with either a swirl of olive oil or a little sour cream, if desired.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	735.82 Kcal (3081 kJ)
Calories from fat	443.19 Kcal
		% Daily Value*
Total Fat	49.24g	76%
Cholesterol	106.47mg	35%
Sodium	90.41mg	4%
Potassium	573.7mg	12%
Total Carbs	15.02g	5%
Sugars	8.78g	35%
Dietary Fiber	2.71g	11%
Protein	57.24g	114%
Vitamin C	23.7mg	39%
Iron	2mg	11%
Calcium	52.6mg	5%

Amount Per 100 g
Calories	248.16 Kcal (1039 kJ)
Calories from fat	149.47 Kcal
		% Daily Value*
Total Fat	16.61g	76%
Cholesterol	35.91mg	35%
Sodium	30.49mg	4%
Potassium	193.49mg	12%
Total Carbs	5.07g	5%
Sugars	2.96g	35%
Dietary Fiber	0.91g	11%
Protein	19.3g	114%
Vitamin C	8mg	39%
Iron	0.7mg	11%
Calcium	17.7mg	5%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.

Tastes

salty
savory
bitter
sweet

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