Name: Low-Calorie Spinach and Sweet Potato Soup for Family Meal Prep
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Cuisine: International
Ingredients: 2 medium sweet potatoes, peeled and diced (about 500 g); 4 cups low‑sodium vegetable broth; 2 cups fresh baby spinach leaves, packed; 1 medium onion, diced; 2 garlic cloves, minced; 1 tbsp olive oil; 1 tsp ground cumin; ½ tsp smoked paprika; ¼ tsp ground black pepper; ½ tsp sea salt; ¼ cup plain low‑fat Greek yogurt (optional garnish); 1 tbsp fresh lemon juice

Prep Time

15 min

Cook Time

30 min

Servings

Looking for a nutritious, low‑calorie soup that satisfies a busy family? This Spinach and Sweet Potato Soup blends creamy sweet potatoes with bright spinach, delivering a velvety texture without heavy cream. Perfect for meal‑prep, each batch stores beautifully for up to four days, making weekday lunches effortless.

Root vegetables provide steady energy, while leafy greens add iron and antioxidants. The recipe uses just a handful of pantry staples, keeping costs low and prep simple. Whether you’re counting calories or craving comfort, this soup hits the sweet spot.

Because it’s entirely plant‑based, you can adapt it for vegan or dairy‑free diets in seconds. The flavor deepens after chilling, so it’s even tastier the next day—ideal for families who love make‑ahead meals.

Why You'll Love This Recipe

✓ Light & Satisfying: Only 120 kcal per serving, yet the sweet potato gives a natural creaminess that keeps you full.

✓ Meal‑Prep Friendly: Makes a big batch, stores in airtight containers, and reheats in minutes without losing texture.

✓ Nutrient Powerhouse: Spinach delivers iron and vitamin K, while sweet potatoes supply beta‑carotene and fiber.

4 cups fresh spinach, loosely packed Adds iron and a vivid green hue; kale can replace.

4 cups low‑sodium vegetable broth Keeps the soup light; homemade broth works too.

1 small onion, diced Adds aromatic base; shallots work as a milder alternative.

2 cloves garlic, minced Boosts flavor; garlic powder can replace if fresh isn’t handy.

1 tbsp olive oil For sautéing; avocado oil is a neutral alternative.

½ tsp ground cumin Adds warm earthiness; optional for a milder profile.

Instructions

Sauté aromatics

Heat olive oil in a large pot over medium heat. Add diced onion and cook 4‑5 minutes until translucent, then stir in garlic and cumin; sauté another minute until fragrant.

Pro Tip: Do not let garlic brown; it turns bitter.

Add sweet potatoes & broth

Stir in cubed sweet potatoes, then pour in vegetable broth. Increase heat to bring the mixture to a gentle boil, then reduce to a simmer and cover.

Pro Tip: Simmer 15‑18 minutes until potatoes are fork‑tender.

Blend until silky

Remove the pot from heat. Using an immersion blender, puree the soup until completely smooth. If you prefer a thinner consistency, add ½‑1 cup water or extra broth.

Pro Tip: Blend in batches to avoid splatter.

Add spinach & finish

Return the pot to low heat. Stir in fresh spinach; it wilts in 2‑3 minutes. Season with salt and pepper to taste. For extra richness, swirl in a tablespoon of coconut milk.

Pro Tip: Add spinach off the heat to keep its vibrant green color.

Portion and store

Ladle soup into bowls or airtight containers. Cool to room temperature before refrigerating (up to 4 days) or freezing (up to 3 months). Reheat gently on the stove, adding a splash of broth if needed.

Pro Tip: Leave a thin rim of space in freezer bags to allow expansion.

Expert Tips

Tip #1: Roast the sweet potatoes

Roasting cubed sweet potatoes at 400°F for 20 minutes before adding broth deepens their natural sweetness and adds a subtle caramel note.

Tip #2: Use a splash of acid

A teaspoon of lemon juice or apple cider vinegar brightens the flavor and balances the natural sweetness of the potatoes.

Tip #3: Garnish wisely

Top each serving with a drizzle of Greek yogurt, toasted pumpkin seeds, or fresh chives for texture contrast without many extra calories.

Storage & Variations

Store the soup in glass jars; it keeps 4 days in the fridge or 3 months frozen. For a spicy twist, stir in a pinch of cayenne or a dash of hot sauce. To make it vegan, replace coconut milk with oat cream.

Nutrition

Per serving

Calories

120 kcal

Protein

3 g

Fat

4 g

Carbs

18 g

Frequently Asked Questions

Yes. Thaw and squeeze out excess water before adding. Frozen spinach blends more easily, but fresh gives a brighter color and fresher taste.

Add a tablespoon of cashew cream or coconut milk at the end of cooking. Both enrich texture while keeping the soup low‑calorie.

Absolutely. Just keep the same ingredient ratios and use a larger pot. Adjust seasoning to taste after blending.

Use a no‑salt‑added broth and season with herbs, lemon juice, or pepper instead of salt. The natural sweetness of sweet potatoes reduces the need for extra seasoning.