Wild Rice Casserole Vegetables

Featured in: Oven & Stovetop Creations

This satisfying baked dish combines nutty wild rice with tender vegetables including mushrooms, onions, carrots, celery, and bell pepper. Aromatic herbs like thyme and rosemary infuse every bite with savory flavor. The rice simmers in vegetable broth until perfectly tender, creating a comforting dish that works beautifully as either a side or main course. Optional Gruyère cheese adds a rich, golden finish.

Updated on Wed, 14 Jan 2026 11:28:00 GMT
Fork-tender wild rice casserole with earthy mushrooms and melted Gruyère, served bubbling from the oven. Save
Fork-tender wild rice casserole with earthy mushrooms and melted Gruyère, served bubbling from the oven. | buenotaddart.com

The first time I made wild rice casserole was during a particularly brutal Minnesota winter when my refrigerator was practically empty except for a bag of wild rice Id bought months earlier and some vegetables that needed using. That impromptu dinner turned into something magical, the kind of dish that makes the house smell incredible and warms you from the inside out. Now whenever the weather turns cold, this casserole is my go-to for comfort.

I served this at a Friendsgiving last year when two of my guests were gluten-free and another was vegetarian. Honestly I was nervous it would feel like a compromise dish, but everyone kept asking for the recipe and my friend actually texted me the next morning saying she had dreams about it.

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Ingredients

  • Wild rice: Rinsing it thoroughly removes any debris and helps the grains cook more evenly, giving you that perfect tender texture
  • Vegetable broth: Use a good quality broth you enjoy drinking on its own since it provides the base flavor for the entire dish
  • Mushrooms: Cremini mushrooms work beautifully here, adding an earthy depth that pairs so well with the nutty wild rice
  • Red bell pepper: This adds sweetness and bright color that makes the casserole look gorgeous on the table
  • Fresh spinach: Stir it in at the very end so it wilts just slightly but still keeps some texture and vibrant green color
  • Optional cheese: Gruyère adds this wonderful nutty savory note but the casserole is absolutely delicious without it too

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Instructions

Get your oven ready:
Preheat to 350°F and grease a 9x13 baking dish with butter or oil so nothing sticks
Sauté the aromatics:
Heat olive oil in a large skillet over medium heat and cook onion and garlic until they smell amazing, about 2 to 3 minutes
Add the hearty vegetables:
Toss in mushrooms, carrot, celery and red bell pepper, cooking until they soften and mushrooms release their liquid, 5 to 7 minutes
Season everything:
Stir in spinach, thyme, rosemary, salt and pepper, cooking just until the spinach starts to wilt, about 1 minute
Combine in the baking dish:
Mix wild rice, sautéed vegetables, vegetable broth and water in your prepared dish, stirring well to distribute everything evenly
Bake covered:
Cover tightly with foil and bake for 1 hour until rice is tender and most liquid has been absorbed
Add cheese if using:
Remove foil, sprinkle cheese on top and bake another 10 minutes until melted and golden
Let it rest:
Wait 5 minutes before serving so the casserole sets slightly and is easier to scoop
Golden-brown wild rice casserole garnished with fresh thyme, alongside a hearty vegetarian dinner plate. Save
Golden-brown wild rice casserole garnished with fresh thyme, alongside a hearty vegetarian dinner plate. | buenotaddart.com

My sister who claims to hate wild rice tried this and ended up taking home all the leftovers. Thats when I knew this recipe was a keeper.

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Make It Your Own

Sometimes I add toasted pecans or walnuts during the last 10 minutes of baking for extra crunch and protein. You can also swap in kale for the spinach if thats what you have on hand.

Make Ahead Magic

This casserole is perfect for busy weeknights because you can assemble it completely the day before and just bake it when you're ready. The flavors actually develop even more when they sit overnight.

Serving Suggestions

While this is hearty enough to stand alone as a main dish, it also pairs beautifully with roasted chicken or a simple green salad. The leftovers reheat beautifully in the microwave or oven.

  • Top with fresh herbs like parsley or chives before serving
  • A squeeze of lemon juice right before serving brightens all the flavors
  • Leftovers keep for up to 3 days in the refrigerator
Colorful baked wild rice casserole with spinach and red bell peppers, ready to serve family-style. Save
Colorful baked wild rice casserole with spinach and red bell peppers, ready to serve family-style. | buenotaddart.com

Theres something so satisfying about a dish that comes out of the oven bubbling and fragrant, ready to feed the people you love.

Recipe FAQ

Can I make this ahead of time?

Yes, prepare the entire dish up to a day in advance and refrigerate. Reheat covered at 350°F for 20-25 minutes until warmed through.

What type of rice works best?

True wild rice delivers the best nutty flavor and chewy texture. Brown wild rice blends work well too. Avoid white rice as it becomes too soft.

Can I freeze leftovers?

Portion cooled casserole into airtight containers and freeze for up to 3 months. Thaw overnight in refrigerator before reheating.

How do I make it vegan?

Skip the cheese topping entirely or use vegan cheese alternative. Ensure vegetable broth is used rather than chicken broth.

What vegetables can I substitute?

Kale or chard replace spinach nicely. Try adding butternut squash, parsnips, or green beans for seasonal variations. Keep total vegetable quantity similar.

Why is my rice still hard after baking?

Wild rice varies by brand. If still firm, add ¼ cup more broth, cover, and bake 10-15 minutes longer until tender.

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Wild Rice Casserole Vegetables

Hearty baked wild rice with mushrooms, vegetables, and aromatic herbs in savory broth.

Prep time
20 min
Time to cook
60 min
Overall time
80 min
Created by Lindsey Parks


Skill level Easy

Cuisine American

Portion 6 Number of servings

Dietary details Meat-Free, No Gluten

What You'll Need

Grains

01 1 cup wild rice, rinsed
02 2 cups vegetable broth (gluten-free, if needed)
03 1 cup water

Vegetables

01 2 tablespoons olive oil
02 1 medium yellow onion, finely chopped
03 2 garlic cloves, minced
04 2 cups cremini or white mushrooms, sliced
05 1 medium carrot, diced
06 1 celery stalk, diced
07 1 red bell pepper, diced
08 1 cup fresh spinach, chopped

Seasonings

01 1 teaspoon dried thyme
02 1 teaspoon dried rosemary
03 ½ teaspoon salt
04 ¼ teaspoon black pepper

Dairy (optional)

01 ½ cup grated Gruyère or Swiss cheese (optional, for topping)

How-To

Step 01

Preheat Oven and Prepare Dish: Preheat the oven to 350°F. Grease a 9x13-inch baking dish lightly with oil or cooking spray.

Step 02

Sauté Aromatics: Heat olive oil in a large skillet over medium heat. Add chopped onion and minced garlic; sauté for 2–3 minutes until fragrant and translucent.

Step 03

Cook Vegetables: Add sliced mushrooms, diced carrot, celery, and red bell pepper to the skillet. Cook for 5–7 minutes until vegetables soften and mushrooms release their moisture.

Step 04

Add Spinach and Seasoning: Stir in chopped spinach, dried thyme, dried rosemary, salt, and black pepper. Cook for 1 minute until spinach wilts slightly.

Step 05

Combine Ingredients in Baking Dish: Transfer rinsed wild rice to the prepared baking dish. Add sautéed vegetables, vegetable broth, and water. Mix thoroughly to distribute ingredients evenly.

Step 06

Bake Covered: Cover the baking dish tightly with aluminum foil. Bake for 1 hour, or until rice is tender and most liquid has been absorbed.

Step 07

Add Optional Cheese Topping: If using cheese, remove foil and sprinkle grated Gruyère or Swiss cheese evenly over the top. Bake uncovered for an additional 10 minutes until cheese melts and turns golden.

Step 08

Rest Before Serving: Remove from oven and let the casserole rest for 5 minutes before serving to allow flavors to settle.

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What You Need

  • Large skillet
  • 9x13-inch baking dish
  • Mixing spoon
  • Aluminum foil
  • Chef's knife and cutting board

Allergy notes

Always inspect ingredients and talk to your doctor if you have any allergy concerns.
  • Contains dairy if cheese topping is used.
  • Gluten-free if gluten-free vegetable broth is used.
  • Always check broth and cheese labels for hidden allergens.

Nutrition per portion

These nutritional details are for general reference – they're not medical recommendations.
  • Energy: 190
  • Fats: 6 g
  • Carbohydrates: 29 g
  • Proteins: 6 g

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