The Test Kitchen

Roasted Sweet Potato Soup

Name: Roasted Sweet Potato Soup
Prep time: 15 min
Cook time: 1 h 45 min
Total time: 2 h
Yield: 6 servings
Ingredients: 4 pounds sweet potato, peeled and cut into 1/2-inch dice; 6 tablespoons vegetable, canola, or grapeseed oil, divided; Kosher salt; 4 medium carrots, peeled and diced; 1 medium onion, chopped; 5 cloves garlic, crushed; 2 sprigs sage (optional); 2 quarts homemade or store-bought low-sodium chicken stock or vegetable stock; 1/4 cup fresh juice and 1 tablespoon freshly grated zest from 1 medium orange, divided; 3/4 cup shelled roasted pistachios, crushed in a mortar and pestle or food processor; 2 scallions, thinly sliced, white and light green parts only; 2 tablespoons very thinly sliced fresh mint leaves (from about 5 sprigs); Pinch cayenne pepper; 1/2 cup extra-virgin olive oil

6 servings

servings

15 minutes

active time

2 hours

total time

Start Cooking

Ingredients

4 pounds sweet potato, peeled and cut into 1/2-inch dice

6 tablespoons vegetable, canola, or grapeseed oil, divided

Kosher salt

4 medium carrots, peeled and diced

1 medium onion, chopped

5 cloves garlic, crushed

2 sprigs sage (optional)

2 quarts homemade or store-bought low-sodium chicken stock or vegetable stock

1/4 cup fresh juice and 1 tablespoon freshly grated zest from 1 medium orange, divided

3/4 cup shelled roasted pistachios, crushed in a mortar and pestle or food processor

2 scallions, thinly sliced, white and light green parts only

2 tablespoons very thinly sliced fresh mint leaves (from about 5 sprigs)

Pinch cayenne pepper

1/2 cup extra-virgin olive oil

Directions

Preheat oven to 300°F (150°F). Toss sweet potato with 4 tablespoons vegetable oil and salt. Spread sweet potato on 2 rimmed baking sheets and bake for 1 hour, rotating pans front to back and top to bottom halfway through cooking. Increase oven temperature to 375°F (190°C) and cook until sweet potatoes are tender and lightly browned around the edges, about 25 minutes.

In a large pot, heat remaining 2 tablespoons vegetable oil over medium-high heat until shimmering. Add carrot, onion, garlic, sage (if using), and a generous pinch of salt and cook, stirring, until vegetables are just tender.

Add sweet potatoes and stock and bring to a simmer. Cook for 10 minutes until vegetables are very tender. Discard sage, if using. Add orange juice. Using an immersion blender or countertop blender, blend soup until smooth. Season with salt.

If desired, pass soup through a fine-mesh strainer using a rubber spatula to plunge and scrape it through (it may not seem like it at first, but almost all of the soup will pass through).

In a mixing bowl, stir together pistachios, orange zest, scallions, mint, and cayenne pepper. Fold in olive oil and season with salt.

Serve soup, spooning pistachio salsa on top.

Nutrition

Serving Size

Serves 4 to 6

Calories

574 kcal

Total Fat

31 g

Saturated Fat

4 g

Unsaturated Fat

0 g

Trans Fat

Cholesterol

0 mg

Sodium

1061 mg

Total Carbohydrate

66 g

Dietary Fiber

11 g

Total Sugars

22 g

Protein

13 g