Substitutions

• Vegetable stock for chicken stock: Vegetable stock works well when you want a meat free version while still keeping plenty of savory flavor in the soup.
• Half and half for heavy cream: Half and half gives you a slightly lighter finished soup while still adding a pleasant creamy texture.
• Coconut milk for heavy cream: Full fat unsweetened coconut milk can work for a dairy free version, though it will bring a mild coconut taste to the finished bowl.
• Yellow onion for white onion: A large yellow onion is an easy swap and develops a similar mellow sweetness as it cooks.
• Extra olive oil for butter: You can leave out the butter and use additional olive oil if needed, though you will lose a little of that buttery richness.

Variations

• Roasted sweet potato soup: Roast the sweet potato cubes before adding them to the soup for deeper caramelized notes and an even richer sweet potato flavor.
• Bacon sweet potato soup: Cook chopped bacon until crisp, then scatter it over each bowl for a salty, smoky contrast to the creamy soup.
• Ham and sweet potato soup: Stir small pieces of cooked ham into the pot near the end for a more filling version that works especially well on cold evenings.
• Spiced sweet potato soup: Add a small pinch of smoked paprika, cinnamon, or cayenne with the cumin if you want a little more warmth and depth.
• Extra creamy sweet potato soup: Stir in a little additional heavy cream at the end for a richer consistency, adding it gradually so the sweet potato still remains the main flavor.

Tips and Tricks

• Cut the potatoes evenly: Similar sized cubes cook at roughly the same pace, so you are less likely to find a firm piece hiding among potatoes that are already soft.
• Give the onions enough time: Soft, lightly golden onions add real depth to the soup, so those first 8 to 10 minutes are worth the wait.
• Warm the cumin in the pot: Cooking the cumin briefly with the garlic and onion helps bring out its aroma before you add the chicken stock.
• Blend hot soup carefully: If you use a standard blender, work in smaller batches and leave enough room for steam.
• Wait before thinning the soup: Sweet potato soup naturally gets thicker as it sits, but you can always add broth later, so do not rush to add extra liquid during cooking.
• Keep toppings simple: Chives, green onions, bacon, black pepper, toasted seeds, or a little swirl of cream give you plenty of options without adding much extra work.
• Try roasting the potatoes: If you have a little more time, roasting brings out caramelized sweetness and makes the finished soup taste deeper and richer.

Serving Ideas

• Crusty bread: A warm loaf with a crisp crust is ideal for dipping into the thick soup and catching whatever is left at the bottom of the bowl.
• Grilled cheese: A simple grilled cheese sandwich turns this into one of those comforting dinners that usually gets everyone to the table pretty quickly.
• Fall salad: Greens with sliced apple, toasted nuts, and a tangy vinaigrette give you a fresh, crisp contrast to the creamy sweet potato soup.
• Roasted vegetables: Brussels sprouts, broccoli, cauliflower, or green beans make an easy savory side when you want to put a little more on the table.
• Turkey or chicken sandwiches: A basic sandwich adds protein and makes the meal more filling for anybody who considers a bowl of soup only the beginning of dinner.
• Simple crackers: Some nights you do not need to make another thing. Put a sleeve of crackers on the table, call everybody in, and enjoy your soup while it is hot.

Storage and Make Ahead Tips

• Refrigerate leftovers promptly: Let the soup cool, transfer it to an airtight container, and store it in the refrigerator for 2 to 3 days.
• Reheat the soup gently: Warm it over low to medium heat on the stove and stir regularly so the thick soup does not catch on the bottom of the pot.
• Add broth when reheating: The soup becomes thicker as it cools, so a small splash of chicken stock can bring refrigerated leftovers back to their original creamy consistency.
• Prepare the vegetables early: Dice the onion and peel and cube the sweet potatoes earlier in the day, then refrigerate them in separate covered containers until you are ready to start dinner.
• Make the whole soup ahead: You can prepare the soup a day before serving and gently reheat it on the stove, adding a little stock if necessary.
• Freeze before adding cream when possible: If you are intentionally cooking a batch for the freezer, leave out the cream and stir it in after thawing and reheating for the smoothest result.