Ingredients

2 pounds Yukon gold potatoes, peeled and cut into roughly 2-inch pieces

2 1/4 pounds plum tomatoes, all quartered

1 head garlic

1 tablespoon olive oil

1 teaspoon salt, plus more to taste

1/2 teaspoon freshly ground pepper, plus more to taste

2 teaspoons dried savory or thyme

1 1/2 teaspoons curry powder

3 1/2 cups homemade or canned low-sodium chicken stock, skimmed of fat

1/2 cup skim milk

Juice of one lemon

6 slices whole-wheat bread

3 to 4 sprigs fresh thyme

Olive-oil cooking spray

Preparation

Heat oven to 450 degrees with two racks centered. Spray two 12-by-14-inch roasting or jelly-roll pans with cooking spray. Arrange potatoes in one pan and tomatoes in second pan. Add garlic to one of the pans. Drizzle potatoes with oil; toss. Sprinkle potatoes with 1/2 teaspoon salt and 1/4 teaspoon pepper. Sprinkle tomatoes with remaining 1/2 teaspoon salt and 1/4 teaspoon pepper. Sprinkle one teaspoon of savory or thyme over ingredients in each pan. Roast 20 minutes; turn potatoes and tomatoes with a spatula. Sprinkle curry powder over both pans. Cook until potatoes and garlic are tender, 20 to 30 minutes more.

Transfer potatoes to a food mill fitted with a medium disk, in batches if necessary. Pass potatoes through mill; transfer to a stockpot. Add 2 cups stock to roasting pan; place over high heat on stove. Cook, scraping up any cooked-on bits with a wooden spoon, until liquid reduces slightly 2 to 4 minutes. Add liquid to stockpot; stir until smooth.

Using back of a knife, scrape soft, roasted garlic out of 4 to 5 cloves; reserve. Scrape out remaining garlic; set aside. Set aside 12 pieces of tomato for garnish. Transfer tomatoes to food mill with the 4 to 5 cloves of garlic; pass through into a large bowl. Transfer to stockpot. Add remaining 1 1/2 cups stock and milk. Place over medium heat; stir until warm and combined. Adjust seasoning. Just before serving, add lemon juice to taste.

Toast bread slices under the broiler. In a small bowl, smash reserved garlic cloves with a fork until smooth. Chop leaves from two sprigs of thyme. Slather toast with garlic puree, top with reserved tomatoes, and sprinkle with chopped thyme. Use remaining thyme to garnish soup.