Miso-Glazed Sweet Potato and Kale Soup

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A savory-sweet soup with roasted sweet potatoes, kale, and a depth of miso, perfect for cold weather. This japanese-inspired soups (vegetarian) ready in about 50 minutes pairs sweet potatoes, olive oil, onion for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 220 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

★ 4.5 (15 ratings) Prep: 15 min Cook: 35 min Serves 4 Japanese-inspired cuisine 220 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 400°F (200°C). Toss 2 medium peeled and diced sweet potatoes (1 inch) with 1 tablespoon olive oil, salt, and pepper in a bowl.
  2. Step 2: Spread sweet potatoes on a baking sheet and roast for 25 minutes until tender and caramelized, flipping halfway.
  3. Step 3: Heat a large pot over medium heat. Add 1 small diced onion and 2 minced garlic cloves, cooking for 5 minutes until softened and fragrant.
  4. Step 4: Add 4 cups vegetable broth and roasted sweet potatoes to the pot. Simmer for 10 minutes, stirring occasionally.
  5. Step 5: Stir in 1 cup chopped kale and 2 tablespoons white miso paste. Simmer for 5 minutes until kale is wilted.
  6. Step 6: Stir in 1 tablespoon rice vinegar and a pinch of salt. Adjust seasoning if needed.

Frequently asked questions

How long does Miso-Glazed Sweet Potato and Kale Soup take to make?

Total time is about 50 minutes (15 min prep + 35 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Miso-Glazed Sweet Potato and Kale Soup?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep sweet potatoes from drying out.

Can I substitute ingredients in Miso-Glazed Sweet Potato and Kale Soup?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Miso-Glazed Sweet Potato and Kale Soup for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Miso-Glazed Sweet Potato and Kale Soup vegetarian?

Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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