"You only need three ingredients to make this velvety, rich tomato soup recipe. This, friends, is your new favorite weeknight meal...."
INGREDIENTS
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4 tablespoons unsalted butter
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1/2 large onion, cut into large wedges
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1 (28-ounce) can tomatoes, we prefer to use whole peeled or crushed
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1 1/2 cups water or low-sodium chicken stock
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1 teaspoon kosher salt, or more to taste