Instant Pot Cassoulet Recipe: White Bean and Sausage Rustic Stew

Traditional cassoulet meets modern convenience in this pressure cooker adaptation of the French classic.

This recipe captures all the rich, hearty flavors of the original—tender white beans, smoky sausage, and aromatic herbs—without the hours of slow cooking. The Instant Pot transforms tough ingredients into a meltingly tender stew with deep, developed flavors.

What emerges is a rustic, satisfying dish that feels special enough for company but simple enough for a weeknight. The beans absorb the savory broth, while the sausage adds a meaty depth that makes every bite substantial.

Serve with crusty bread to soak up every last drop of the flavorful sauce.

Ingredients for Instant Pot Cassoulet

Rustic French flavors come together with pantry staples and a few fresh additions.

The sausage is key here—Kielbasa or andouille delivers that smoky depth traditional cassoulet requires. Most grocery stores carry quality options in the deli section. For the beans, Great Northern or cannellini work best (avoid kidney beans, they don’t absorb flavors as well). If using canned beans, reduce broth to 3 cups. Trader Joe’s has excellent pre-cooked options if you’re short on time.

No smoked sausage? Italian sausage plus a pinch of smoked paprika gets close. Fresh herbs can replace dried—use 1 tbsp fresh thyme instead of 1 tsp dried. For a vegetarian twist, swap sausage for mushrooms and smoked tofu. The tomato paste can be omitted in a pinch, but add 1 extra tsp salt to compensate. Don’t skip the bay leaf—it’s subtle but essential.

This stew tastes even better the next day. Store in the fridge for up to 4 days or freeze for 3 months. The beans will thicken the broth as it sits, so add a splash of water when reheating. Perfect for meal prep—reheats beautifully and the flavors just keep developing.

Step-by-Step Instructions for White Bean and Sausage Rustic Stew

This method delivers rich, layered flavors with minimal hands-on time using pressure cooking.

Step 1: Prepare and Sauté the Aromatic Base

Set the Instant Pot to the sauté function on normal heat. Add the 2 tbsp olive oil and let it shimmer for 30 seconds. Add the 1 whole yellow onion, 2 whole carrots, and 2 whole celery stalks, all finely diced to create a classic mirepoix.

Sauté for 5-6 minutes until the vegetables soften and the onion becomes translucent. Stir occasionally to prevent browning, as the goal is to build a flavorful foundation without caramelization. Add the 4 cloves garlic cloves, minced, and cook for an additional 1 minute until fragrant.

Step 2: Brown the Sausage and Add Tomato Components

Add the sliced 14 oz smoked sausage to the pot and cook for 3-4 minutes, allowing it to develop a light golden crust. This step enhances the depth of flavor in the dish. Stir in the 2 tbsp tomato paste and cook for 1 minute, which will deepen its color and mellow its acidity.

Pour in the 1 can canned diced tomatoes with their juices, scraping the bottom of the pot to deglaze and release any browned bits. These bits, known as fond, are packed with flavor and will dissolve into the stew as it cooks.

Step 3: Add Remaining Ingredients and Pressure Cook

Add the 1 lb dried great northern beans, 4 cups chicken broth, 1 tsp dried thyme, and 1 whole bay leaf to the pot. Stir thoroughly to combine all ingredients. Secure the lid and set the valve to the sealing position.

Cook on high pressure for 30 minutes. The beans will absorb the smoky, savory flavors of the sausage and aromatic vegetables, transforming into a creamy, hearty stew. Once the cooking cycle completes, allow the pressure to release naturally for 15 minutes, then quick-release any remaining pressure.

Step 4: Season and Finish the Stew

Remove the lid and discard the bay leaf. Stir in the 1 tsp salt and 0.5 tsp black pepper. Taste and adjust seasoning if needed. The beans should be tender but still hold their shape, and the broth should be rich and flavorful.

Ladle the stew into bowls and garnish with the 0.25 cup fresh parsley, chopped. The parsley adds a bright, fresh contrast to the deep, earthy flavors of the dish. Serve immediately, as this stew tastes best hot with a side of crusty bread.

Pro Cooking Tips for This Recipe

Bean Prep Matters

For the creamiest texture, soak the 1 lb dried Great Northern beans overnight in 4 cups cold water. This reduces cooking time and prevents the skins from splitting. If you forget, use the quick-soak method: boil for 2 minutes, then let sit off heat for 1 hour. 💡

Sauté Sequence

Always sauté the mirepoix first until translucent before adding sausage. This builds the flavor foundation. I use my Instant Pot Duo on normal sauté mode for precise control. Brown the 14 oz sausage just until it develops a light crust—over-browning can make it tough.

Deglaze Thoroughly

After adding 2 tbsp tomato paste, let it cook for 1 minute until it darkens slightly. Then pour in ½ cup broth (from your 4 cups) to scrape up all browned bits. This fond is pure flavor—don’t let it go to waste.

Pressure Release

After 30 minutes high pressure, let the pressure release naturally for 15 minutes. This extra time allows the beans to finish absorbing liquid without overcooking. Quick-release any remaining pressure after that. ⚡

Thickness Control

If your stew is too thin, mash ¼ cup beans against the pot wall and stir in. For too-thick stew, add ½ cup hot water and stir. The perfect consistency should coat the back of a spoon.

Herb Timing

Add the 1 tsp dried thyme and bay leaf with the broth, not earlier. This prevents the herbs from turning bitter during the long sauté. Fresh herbs can be added at the end for brighter flavor.

Frequently Asked Questions