When cooler weather arrives, I reach for dishes that feel like the holidays are near. This Roasted Butternut Squash Soup on the Big Green Egg is one of my favorites: rich, creamy and full of deep roasted flavor. It makes a wonderful starter for Thanksgiving, Christmas, or any crisp autumn evening.
This version began with a large butternut squash from my garden. Roasting the squash on the Big Green Egg adds a subtle smoky note that elevates the classic soup into something memorable. The squash’s natural sweetness paired with the live-fire flavor gives the soup comfort and sophistication at once.
Pour a glass of Riesling, fire up the Big Green Egg, and enjoy one of the best fall soups you can make this season.
Preparing the Butternut Squash
Start by peeling the squash, removing the seeds and fibrous center, and cutting it into evenly sized cubes. Uniform pieces roast more evenly and make blending simpler later. Freshly prepped squash has far better flavor than pre-cut store varieties, and the extra knife work is worth the result.
Prepping the Aromatics
Dice a large yellow onion to form the savory base that balances the squash’s sweetness. Mince fresh garlic, grate ginger and roughly chop herbs—sage and thyme work especially well. These aromatics build depth and warmth so the finished soup tastes layered and balanced.
Because the soup is blended later, precise cuts aren’t necessary. The goal is to have everything ready so the flavors can roast together and develop fully.
Big Green Egg Setup and Preheating the Dutch Oven
Set up the Big Green Egg for indirect cooking with the convEGGtor and preheat to 375°F. Place a cast iron Dutch oven inside as the grill heats so it warms along with the Egg. A hot Dutch oven gets the aromatics cooking immediately and helps build better flavor from the start.
Cooking the soup in a Dutch oven on the Big Green Egg adds a gentle smoky dimension you won’t get on the stovetop, making this approach ideal for holiday-worthy soup.
Starting the Soup in the Dutch Oven
With the Dutch oven hot, add olive oil and the diced onion. Sauté until the onion softens and turns translucent—no need for deep browning, just enough time for sweetness and aroma to develop. This aromatic base makes a big difference in the final soup.
Adding the Seasoning
After the onions soften, stir in the seasoning so it can bloom with the aromatics. A slightly sweet, warm spice blend complements the squash without overpowering it. Let the spices cook briefly with the onions to anchor the flavors in the soup’s base.
Adding the Squash and Aromatics
Add the cubed squash to the Dutch oven and stir to coat it in oil, onions and seasoning. Toss in the chopped herbs, garlic and grated ginger. Stir until everything is evenly combined—the smell as the ingredients hit the heat is what fall cooking should be.
Adding the Stock and Simmering
Pour in vegetable stock so the squash is mostly covered, stir to combine, then cover the Dutch oven. Let the soup simmer on the Big Green Egg for 30 to 40 minutes, until the squash is fork tender and the aromatics have melded into a full-bodied, fragrant base.
You’ll know it’s ready when the squash breaks apart easily—this is when the soup truly starts to evoke holiday flavors.
Blending the Soup
When the squash is tender, puree the soup until smooth using an immersion blender directly in the Dutch oven. Blend thoroughly to remove any large pieces and achieve a silky texture.
If you don’t have an immersion blender, use a countertop blender in batches—take care with hot liquid. Return the pureed soup to the Dutch oven and adjust seasoning or texture with extra stock if needed.
Serving the Butternut Squash Soup
Ladle the soup into warm bowls and garnish to taste. Roasted pumpkin seeds add a pleasant crunch, and a drizzle of sriracha brings a bright finish and a touch of heat. Fresh thyme or a light swirl of cream also dress the soup beautifully for a holiday table.
This soup makes a lovely Thanksgiving starter, a first course for Christmas dinner, or a comforting weeknight meal served with crusty bread.
Make Ahead and Leftovers
The soup often tastes even better the next day as the flavors continue to meld, making it an excellent make-ahead option for holidays. Cool completely, store covered in the refrigerator, and reheat gently on the stovetop or in the Dutch oven.
Leftovers will keep up to a week in the fridge. If the soup thickens after chilling, stir in a little extra stock while reheating to reach the desired consistency.
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Roasted Butternut Squash Soup on the Big Green Egg
Equipment
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Cast Iron Dutch Oven
Ingredients
- 2 tbsp extra-virgin olive oil
- 1 large yellow onion, chopped
- ½ tsp sea salt
- 3 pounds butternut squash, peeled, seeded, and cubed
- 3 garlic cloves, chopped
- 1 tbsp fresh sage, chopped
- ½ tbsp fresh rosemary, minced
- 1 tsp fresh ginger, grated
- 32 oz vegetable stock
- 2 tbsp Dizzy Pig Pineapple Head seasoning
Instructions
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Setup the Big Green Egg for indirect cooking using ConvEGGtor and preheat to 375°F.
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Heat oil in a preheated cast iron Dutch oven. Add the onion, salt and seasoning, then sauté until soft. Add the squash and cook, stirring occasionally, until it begins to soften, about 8–10 minutes.
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Add garlic, sage, rosemary and ginger. Cook until fragrant, then add vegetable stock, cover and simmer until the squash is tender, 30–40 minutes.
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Puree the soup with a hand blender or in batches in a countertop blender until smooth.
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Serve topped with roasted pumpkin seeds and a drizzle of sriracha, if desired.
Nutrition information is automatically calculated and should be used as an approximation.