The spicy Italian sausage balances the sweetness of the roasted spaghetti squash.

However, there are a few tricks to make cutting and cooking spaghetti squash easier.

Rub the cut sides of the spaghetti squash with 1 tablespoon olive oil.

Spaghetti Squash Soup with Italian Sausage in a Bowl Next to a Kitchen Towel and a Spoon

Simply Recipes / Mike Lang

Place the squash cut side down on the parchment lined baking sheet.

Roast until tender when pierced with a fork, about 30 to 40 minutes.

Meanwhile, heat the remaining olive oil in a Dutch oven or large soup pot over medium-high heat.

Spaghetti Squash Soup with Italian Sausage in a Bowl Next to a Kitchen Towel, a Spoon, Fresh Sage Leaves, and a Wooden Holder with a Grater

Simply Recipes / Mike Lang

Add the sausage to the pot and use a wooden spoon to break it up into small pieces.

Sprinkle with salt and black pepper and cook until lightly browned, about 5 to 7 minutes.

Add the onion and cook over medium heat until tender, about 3 to 5 minutes.

Spaghetti Squash Soup with Italian Sausage in a Bowl Next to a Kitchen Towel and a Spoon and in the Background, a Parmesan Cheese and a Grater in a Wooden Holder

Simply Recipes / Mike Lang

Add the garlic and cook until fragrant, for 1 minute more.

Add the Swiss chard, beans, and squash.

Cook on medium-low until the chard is tender, 8 to 10 minutes.

Spaghetti Squash Soup with Italian Sausage in a Cast Iron Pot with a Spoon in It Next to a Kitchen Towel

Simply Recipes / Mike Lang

Season with salt and black pepper to taste.

Divide the soup between bowls and garnish with chopped sage, if desired.

Refrigerate leftovers in an airtight container for about 3 days or in the freeze for up to 3 months.

Spaghetti Squash Carefully Cut in Half While Placed on a Folded Kitchen Towel for Spaghetti Squash Soup with Italian Sausage Recipe

Simply Recipes / Mike Lang

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Once the soup comes up to a simmer, stir in the squash.

Spaghetti Squash Carefully Cut in Half While Placed on a Folded Kitchen Towel for Spaghetti Squash Soup with Italian Sausage Recipe

Simply Recipes / Mike Lang

Olive Oil Drizzled onto Flesh Side of Halved Spaghetti Squash for Spaghetti Squash Soup Recipe

Simply Recipes / Mike Lang

Fingers Spreading Olive Oil onto Flesh Side of Halved Spaghetti Squash for Spaghetti Squash Soup Recipe

Simply Recipes / Mike Lang

Halved Spaghetti Squash Placed on Lined Baking Pan, Flesh Side Down for Winter Gourd Soup Recipe

Simply Recipes / Mike Lang

Fork Scraping Spaghetti Squash into “Spaghetti” Strands

Simply Recipes / Mike Lang

Spaghetti Squash Strips Scraped into a Bowl for Soup with Italian Sausage

Simply Recipes / Mike Lang

Sausage Smashed Using a Wooden Spoon in a Cast Iron Pot for Spaghetti Squash Soup with Italian Sausage

Simply Recipes / Mike Lang

Onions Added to Pot with Browned Sausage

Simply Recipes / Mike Lang

Sausage, Onions, and Garlic Cooking in a Cast Iron Pot and Mixed Using a Wooden Spoon

Simply Recipes / Mike Lang

Tomatoes and Stock Added to the Pot

Simply Recipes / Mike Lang

Beans Added to Spaghetti Squash Soup with Italian Sausage in a Cast Iron Pot on a Stove

Simply Recipes / Mike Lang

Swiss Chard Added to Spaghetti Squash Soup with Italian Sausage

Simply Recipes / Mike Lang

Spaghetti Squash Soup Added to Cast Iron Pot

Simply Recipes / Mike Lang