This quick and easy Instant Pot vegetarian stuffing is a homemade Thanksgiving side dish made with simple ingredients in about 30 minutes. It is loaded with sautéed vegetables, button mushrooms, seasoned bread cubes, and classic Italian herbs for a comforting holiday flavor.
Stuffing is one of those traditional side dishes that many people expect to see on the Thanksgiving table. The challenge is that oven space is usually limited, especially when you are also preparing turkey, casseroles, rolls, and desserts. Making vegetarian stuffing in the Instant Pot is a practical way to free up the oven while still serving a warm, flavorful, and satisfying side dish. This recipe has all the cozy flavor of classic stuffing without needing meat, and it works well for holidays, family dinners, or any meal that needs a hearty side.

How To Make Instant Pot Vegetarian Stuffing Recipe From Scratch?
- Add butter to the Instant Pot and turn on the sauté setting.
- Sauté the vegetables, including onions, garlic, celery, carrots, mushrooms, Italian seasoning, poultry seasoning, salt, and pepper.
- Add bread cubes and broth, then gently toss until everything is evenly combined.
- Transfer the mixture to a greased baking dish that fits inside the pressure cooker.
- Cover the dish tightly with aluminum foil.
- Add water to the Instant Pot and place a trivet or rack inside.
- Place the baking dish on top of the trivet.
- Cover and cook on manual pressure until the stuffing is heated through and tender.
- Release the pressure as directed, then carefully remove the hot baking dish.
- Optional step: Remove the foil and broil the stuffing in the oven for a few minutes to brown and crisp the top.
What To Serve With Instant Pot Stuffing?
This Instant Pot vegetarian stuffing is most often served with Thanksgiving turkey, but it also pairs well with many other main dishes. Serve it alongside rotisserie chicken, baked chicken, pork tenderloin, ham, sausage and peppers, or roast beef. Since it is made without meat, it can also be served as part of a vegetarian holiday spread with mashed potatoes, green bean casserole, cranberry sauce, roasted vegetables, and gravy.
The savory herbs, tender bread cubes, and sautéed mushrooms make this stuffing rich enough to stand beside classic holiday mains, but it is also simple enough for a weeknight dinner. If you want a more complete vegetarian meal, serve it with a vegetable-based gravy and a crisp salad for balance.
How To Clean Mushrooms?
To clean mushrooms, fill a bowl with water and gently toss the mushrooms in it for about a minute. Lift them out of the water, then pat them dry with paper towels. Do not let mushrooms soak for too long because they absorb water quickly, which can make the stuffing too wet. If the mushrooms are only lightly dirty, you can also wipe them with a damp paper towel before dicing.
How To Fix Soggy Stuffing?
If the stuffing becomes too soggy, add more dry bread cubes and gently fold them in so they can absorb the extra liquid. The best way to avoid soggy stuffing is to start with less broth and add more only as needed. The bread cubes should be moist but not dripping wet. If you add extra bread, taste the mixture again because you may need a little more seasoning to balance the flavor.
How To Fix Dry Stuffing?
If the stuffing is too dry, add more vegetable broth a small amount at a time. Let the bread sit for a few minutes after each addition so it has time to absorb the liquid. Do not rush this step. Adding too much broth at once can quickly turn dry stuffing into soggy stuffing. The ideal texture should be soft and moist in the center, with a slightly crisp top if you choose to broil it.

Variations For Vegetarian Mushroom Stuffing
Mushroom stuffing casserole– Use leftovers to make a simple casserole. Transfer the stuffing to a baking dish, mix in shredded turkey if desired, drizzle with brown gravy, and top with small cubes of butter. Cover with foil and bake at 350 degrees F for 15-20 minutes. Remove the foil and broil for about 5 minutes, or until the top is golden brown.
Mushroom stuffing balls– Shape leftover stuffing into small balls and bake or fry them as a meatless-style appetizer or side. Add a little broth or gravy if the mixture is too dry to hold together.
Add red pepper flakes– A small pinch adds gentle heat and extra flavor.
Try different seasonings– Cajun seasoning, Mexican seasoning, or curry seasoning can change the flavor profile. Use small amounts so the herbs do not overpower the stuffing.
Use fresh herbs– Sage, rosemary, thyme, parsley, fennel, or a very small dash of nutmeg can add a deeper holiday flavor.
Try other mushrooms– Cremini, portobello, shiitake, oyster, chanterelle, or porcini mushrooms can be used depending on your preference.
Add more vegetables– Peppers, eggplant, corn, broccoli, Brussels sprouts, kale, or finely diced sweet potatoes can be added for more texture and flavor.
Add nuts– Almonds, walnuts, or pecans add crunch. Stir them in at the end so they do not become too soft.
Add cornbread– Replace half of the bread cubes with dry crumbled cornbread. The final texture and color will be slightly different.
Make it gluten free– Use gluten-free bread cubes and gluten-free vegetable broth.
Make it vegan– Replace regular butter with vegan butter.

Tips And Techniques For Veggie Stuffing
Use low-sodium ingredients because they help prevent the stuffing from becoming too salty. You can always add more salt at the end if needed.
Broth vs. stock– Broth is usually seasoned and adds flavor, while stock is often less seasoned and adds body. Vegetable broth works best in this recipe.
Be careful when removing the baking dish from the Instant Pot. It will be very hot, so use oven mitts and lift it slowly.
Use a trivet with handles if possible. It makes lifting the baking dish out of the pressure cooker much easier and safer.
Browning the top is optional, but it gives the stuffing a beautiful golden color and a lightly crisp texture. If you have a few extra minutes, broiling is worth it.
Adjust the seasonings to your taste. Some seasoned bread cubes already contain salt and herbs, so taste before adding too much extra seasoning.
Start with 1.5 cups of broth and only add more if needed. It is much easier to add moisture than to fix stuffing that has become too wet.
Allow a natural pressure release first. When the cooking time is over, let the pressure release naturally for 10 minutes, then move the valve to venting for a quick release. This helps the stuffing finish cooking evenly.
Use seasoned and dried bread cubes for the best texture. Store-bought stuffing cubes work well, or you can use stale dry bread cut into about 1-inch cubes and season it yourself.
Storage
Refrigerate leftover stuffing in a sealed container for up to 3 days.
Freeze in a freezer-safe container for up to 1 month. For the best taste and texture, serve it fresh when possible.
Reheat in the microwave until warm. Add a small splash of broth if the stuffing seems dry.
More One Pot Thanksgiving Side Dishes
- Pumpkin Salad
- Green Bean Casserole
- Candied Carrots
- Creamy Cranberry Salad
- Easy Sweet Potato Casserole
- Homemade Cranberry Sauce
- Creamy Mashed Potatoes
- Garlic Mashed Cauliflower
Recipe

Instant Pot Vegetarian Stuffing
Abeer Rizvi
Ingredients
- ⅓ cup butter unsalted
- ½ cup onions finely chopped
- 1 clove garlic finely minced
- ½ cup celery washed, patted dry, diced
- ½ cup carrots washed, peeled, finely chopped
- 1 cup mushrooms cleaned and diced
- 1 teaspoon Italian seasoning
- 1 teaspoon poultry seasoning
- salt to taste
- pepper to taste
- 1 bag dry herb seasoned bread cubes 12 oz. bag
- 1.5-2 cups vegetable broth low sodium
- 1.5 cups water
Instructions
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Add butter to the Instant Pot.
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Turn on the sauté mode.
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When the butter has melted, add onions, garlic, celery, carrots, mushrooms, Italian seasoning, poultry seasoning, salt, and pepper. Sauté for a few minutes, until the vegetables are partly softened and the excess liquid from the mushrooms has evaporated.
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Add the bread cubes and 1.5 cups of broth. Toss gently to combine. Add more broth only if you prefer a wetter stuffing. The mixture should be moist but not soggy.
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Transfer the mixture to a greased round 1.5-2 quart baking dish.
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Cover the baking dish with aluminum foil and set it aside.
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Place a trivet or rack with handles inside the pressure cooker.
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Pour the water into the Instant Pot.
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Place the covered baking dish on top of the trivet.
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Secure the lid and turn the valve to sealing.
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Select manual mode and set the timer for 15 minutes.
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When the cook time is over, allow the pressure to release naturally for 10 minutes. Then turn the valve to venting and do a quick pressure release.
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Carefully remove the baking dish from the pressure cooker.
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Let the stuffing rest at room temperature for 5 minutes.
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Optional: Remove the foil, place the baking dish under the broiler for about 5 minutes, or until the top is golden brown. Serve warm.
Notes
- Read the tips above for the best texture and flavor.
- Store leftovers in a sealed container in the refrigerator for up to 3 days.
- Reheat in the microwave, adding a small splash of broth if needed.
Nutrition
Carbohydrates: 3g
Protein: 1g
Fat: 8g
Saturated Fat: 5g
Cholesterol: 20mg
Sodium: 258mg
Potassium: 103mg
Fiber: 1g
Sugar: 2g
Nutrition information is an estimate and may vary based on the ingredients used.