Frozen Spinach and Sweet Potato Soup

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A warm, comforting soup combining the sweetness of roasted sweet potatoes with the vibrant freshness of spinach, perfect for chilly evenings. This general-inspired soups (vegetarian) ready in about 50 minutes pairs medium (about 500g) sweet potatoes, frozen spinach, medium, diced yellow onion for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 180 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.

Prep: 10 min Cook: 40 min Serves 4 General cuisine 180 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 425°F (220°C). Peel and cut 2 medium sweet potatoes into 1-inch cubes. Toss with 1 tbsp olive oil and spread on a baking sheet. Roast for 25 minutes until tender and caramelized.
  2. Step 2: While the sweet potatoes roast, heat 1 tbsp olive oil in a large pot over medium heat. Add 1 diced yellow onion and 3 minced garlic cloves, sautéing for 5 minutes until softened and fragrant.
  3. Step 3: Add 4 cups vegetable broth, 200g frozen spinach, roasted sweet potatoes, 1 tsp salt, 1/2 tsp black pepper, and 1/2 tsp ground cumin to the pot. Bring to a boil, then reduce heat and simmer for 10 minutes.
  4. Step 4: Use an immersion blender to puree the soup until smooth and creamy, or carefully transfer to a blender in batches. Adjust seasoning to taste and serve hot.

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Frequently asked questions

How long does Frozen Spinach and Sweet Potato Soup take to make?

Total time is about 50 minutes (10 min prep + 40 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 Frozen Spinach and Sweet Potato 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 frozen spinach from drying out.

Can I substitute ingredients in Frozen Spinach and Sweet Potato 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 Frozen Spinach and Sweet Potato 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 Frozen Spinach and Sweet Potato 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.