Weekday Lentil Soup with Chicken Sausage and Zucchini

Name: Weekday Lentil Soup with Chicken Sausage and Zucchini
Prep time: 12 min
Cook time: 25 min
Total time: 37 min
Yield: 4 servings
Cuisine: American
Ingredients: 12 oz (340 g) chicken sausage links or bulk, casings removed if links, if using links, sliced into ¼-inch (6 mm) coins; if bulk, broken into bite-sized pieces; 1 (150 g) medium yellow onion, finely diced; 3 garlic cloves, minced; 1½ cup (300 g) brown lentils, rinsed and picked over; 6 cup (1440 ml) low-sodium chicken broth; 2 (450 g) medium zucchini, cut into ½-inch (12 mm) cubes; 2 tbsp (30 g) tomato paste; 1 tsp (1 g) dried oregano; 1 bay leaf; 1 tbsp (15 ml) extra-virgin olive oil; kosher salt, to taste; freshly cracked black pepper, to taste; red pepper flakes, pinch (optional) (optional); 1 tbsp (15 ml) fresh lemon juice

From the MyKitchenBank Kitchen

A hearty, weeknight-friendly lentil soup loaded with protein from chicken sausage and fresh zucchini. Ready in under 40 minutes, this one-pot meal is perfect for busy families looking for something nutritious, budget-friendly, and deeply satisfying without complicated techniques.

Prep: 12 min
Cook: 25 min
Total: 37 min
Makes: 4 servings (about 8 cups total)

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Steps

Before you start

Have your broth at room temperature so it heats faster
Rinse the lentils and set them aside
If using frozen sausage, thaw it first for even cooking

1
Brown the sausage
- Heat the olive oil in a large heavy-bottomed pot over medium-high heat.
- Once shimmering, add the sliced sausage and cook, stirring occasionally, until the pieces are lightly browned on the edges and cooked through, about 5–6 minutes.
- The sausage will release fat and flavor into the pot.
- Break it into smaller pieces as it cooks if using links.
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Ready when: Sausage is lightly browned on edges and cooked through (no pink inside); internal temperature reaches 165°F/74°C
Tip: Do not skip browning the sausage—this step builds deep flavor that carries through the entire soup.
2
Build the base
- Add the diced onion to the pot with the cooked sausage and the fat.
- Stir well and cook for 2 minutes to soften the onion slightly.
- Add the minced garlic and tomato paste, stirring constantly for 1 minute to release the garlic's aroma and slightly caramelize the tomato paste.
- This builds a rich, savory foundation.
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Ready when: Onion is softened, garlic is fragrant, tomato paste is slightly darker
Tip: Toast the tomato paste for a full minute to deepen its flavor and reduce any tinny taste.
3
Add broth and lentils
- Pour in the chicken broth and add the rinsed brown lentils, dried oregano, and bay leaf.
- Stir well to combine and ensure the lentils are submerged.
- Bring the mixture to a boil over medium-high heat, then reduce the heat to medium and maintain a gentle simmer.
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Ready when: Broth comes to a rolling boil
Tip: Rinsing the lentils removes dust and any debris; it also helps them cook more evenly.
4
Simmer until lentils soften
- Let the soup simmer gently, uncovered, for 12–14 minutes.
- The lentils should soften but still hold their shape.
- Stir occasionally to ensure even cooking.
- You're looking for the lentils to be tender but not mushy.
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Ready when: Lentils are tender but still hold their shape when stirred
Tip: Brown lentils hold their shape better than red or yellow varieties, making them ideal for hearty soups.
5
Add zucchini and finish
- Stir in the cubed zucchini and continue simmering for 3–4 minutes, just until the zucchini is tender-crisp and no longer raw.
- Remove from heat and discard the bay leaf.
- Stir in the fresh lemon juice and season generously with kosher salt and freshly cracked black pepper to taste.
- Add a pinch of red pepper flakes if you like a touch of heat.
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Ready when: Zucchini is fork-tender but still holds its shape; lemon juice is incorporated
Tip: Add lemon juice at the end to brighten the soup and balance the richness of the sausage without letting it cook off.
6
Taste and adjust seasoning
- Ladle a small amount of soup into a spoon, let it cool for a moment, and taste.
- Adjust the salt, pepper, or lemon juice to your preference.
- The soup should taste savory and well-balanced, with a subtle brightness from the lemon.
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Ready when: Flavors are balanced and taste good to you
Tip: Seasoning is personal—start conservative and add more salt or acid as needed rather than over-seasoning.

Good to know

Tips

For a creamier texture, mash a handful of cooked lentils against the side of the pot with the back of a spoon, then stir them back in. This thickens the broth naturally without cream.
If your sausage is very lean, you may need an extra tablespoon of olive oil to prevent sticking—the fat carries flavor and helps brown the vegetables.
Lentil soups taste better the next day as flavors meld, but add fresh zucchini when serving reheated leftovers to maintain texture.
Serve with crusty bread, a squeeze of lemon, a drizzle of good olive oil, and grated Parmesan for a more substantial meal.

Make ahead

Prepare the onion, garlic, and zucchini up to 1 day ahead and store in separate containers in the refrigerator. The sausage can be sliced 1 day ahead and stored covered. You cannot make the soup ahead and reheat it without affecting the zucchini's texture—it becomes mushy. Instead, make the soup through step 4 (after simmering the lentils), refrigerate it for up to 2 days, then add the zucchini and finish when serving.

Storage & reheating

Room temperature: up to 2 hours in an airtight container. Refrigerator: up to 3 days in an airtight container. Freezer: up to 3 months in freezer bags or airtight containers (omit the zucchini before freezing, as it becomes mushy; add fresh zucchini when reheating). To reheat, thaw overnight in the refrigerator if frozen, then warm gently over medium heat on the stovetop, stirring occasionally. If reheating from the refrigerated stage (before zucchini is added), add the zucchini when you reheat and simmer for 3–4 minutes.

Substitutions

chicken sausage links or bulk, casings removed if links → Italian-style turkey sausage, regular pork sausage, or diced cooked ham. Cooking times remain the same. Regular pork sausage will be richer; turkey and ham are leaner. Adjust salt if using ham, as it adds saltiness.
brown lentils, rinsed and picked over → green lentils (Puy lentils) or mixed red and brown lentils. Green lentils hold their shape very well and cook in a similar time. Avoid all red lentils, as they break down into mush. If using mixed, check doneness around 12 minutes.
medium zucchini → diced yellow squash, diced carrots, or diced bell peppers. Carrots need an extra 2–3 minutes to soften; yellow squash cooks at the same rate as zucchini. Bell peppers add a slight sweetness and are done in 3 minutes.
low-sodium chicken broth → vegetable broth, beef broth, or 4 cups broth plus 2 cups water. Vegetable broth keeps the soup lighter; beef broth makes it deeper and earthier. Water stretches the broth and makes a lighter-bodied soup—good if you prefer less richness.