Vegan Broccoli Casserole – Easy and Delicious Recipe

This Vegan Broccoli Casserole is a delightful twist on a classic holiday side dish. With tender steamed broccoli, savory sautéed mushrooms, and a creamy cashew milk sauce, this dish offers rich flavors and a comforting texture. Topped with crispy onions and breadcrumbs, it’s a perfect addition to your Thanksgiving or Christmas table, and the best part? It’s entirely plant-based and dairy-free!

Vegan Broccoli Casserole

Why You’ll Love This Vegan Broccoli Casserole

This Vegan Broccoli Casserole is not only healthy and easy to prepare, but it’s also versatile and can be customized to fit various dietary preferences. The creamy cashew milk sauce is both rich and satisfying, making it a great option for anyone looking to add a plant-based dish to their holiday spread. Plus, it’s simple enough to make on a weeknight but impressive enough for special occasions.

Ingredients

  • Broccoli florets: Adds a fresh, vibrant crunch and loads of vitamins.
  • Oyster mushrooms: Rich in flavor and texture, these mushrooms help create a hearty filling base.
  • Yellow onion: Provides sweetness and depth to the sauce.
  • Cashew milk: A creamy, dairy-free base for the sauce, offering a subtle nutty flavor.
  • Whole wheat pastry flour: Thickens the sauce, adding body and creaminess without dairy.
  • Nutritional yeast: Gives the casserole a cheesy, umami flavor that enhances the overall dish.
  • Onion powder & garlic powder: These spices add warmth and depth to the cashew milk sauce.
  • Sea salt: Balances the flavors and brings all the ingredients together.
  • Fresh thyme: Adds a fragrant, herbal note to the dish.

Alternative Ingredient Suggestions

  • Mushroom alternatives: If you’re not a fan of oyster mushrooms, consider using shiitake, chanterelles, or even cremini mushrooms for a different flavor profile.
  • Cashew milk substitute: For a nut-free option, you can use oat milk or coconut milk in place of cashew milk.
  • Gluten-free option: Swap out the whole wheat pastry flour with rice flour or chickpea flour to make this casserole gluten-free.

Step-by-Step Instructions

  1. Prepare the broccoli: Steam or boil the broccoli florets until they are tender but not mushy, about 5-7 minutes. Set them aside.
  2. Sauté the onion: In a skillet, sauté the diced onion in a little olive oil (or water for WFPB compliance) over medium heat until it becomes translucent.
  3. Cook the mushrooms: Add the mushrooms to the skillet along with a pinch of sea salt. Cook them until they begin to soften, about 5 minutes. Add the white wine and thyme and cook until the liquid evaporates.
  4. Make the sauce: In a blender, combine cashew milk, flour, nutritional yeast, onion powder, garlic powder, and sea salt. Blend until smooth and without lumps. Pour the sauce into the skillet with the mushrooms and stir until combined. Let it simmer for 3-5 minutes, or until thickened.
  5. Combine broccoli and sauce: Gently mix the steamed broccoli into the creamy mushroom sauce, ensuring the broccoli is evenly coated.
  6. Transfer to casserole dish: Pour the broccoli mixture into a greased casserole dish. Top with your choice of crispy onions, breadcrumbs, or crushed crackers.
  7. Broil: Place the casserole under the broiler for a couple of minutes until the top is golden brown and crispy. Serve hot.
Vegan Broccoli Casserole with creamy cashew milk sauce and crispy onions

Tips & Tricks

  • Avoid overcooking the broccoli: Steam or boil the broccoli just until tender to maintain its texture and vibrant green color.
  • Storage: Leftovers can be stored in an airtight container in the fridge for up to 3 days. You can also freeze the casserole for up to one month.
  • Reheating: To reheat, place the casserole in an oven-safe dish and heat until warmed through. Alternatively, use a microwave for a quicker option.

Pairing Ideas and Variations

This Vegan Broccoli Casserole pairs wonderfully with other holiday favorites like Vegan Mashed Potatoes, Vegan Stuffing, and a Vegan Holiday Roast. If you’re looking for something heartier, serve it with a side of wild rice or quinoa for added protein. To make it a complete meal, consider adding rehydrated soy curls for a protein boost.

For a fun twist, you can experiment with different toppings like crushed cornflakes or even smoky tempeh for a savory crunch. If you prefer a gluten-free version, opt for gluten-free breadcrumbs or crackers for the topping.

Why This Vegan Broccoli Casserole is a Must-Try

This Vegan Broccoli Casserole is not only a healthy, plant-based alternative to the traditional holiday side, but it’s also an easy dish to prepare for any occasion. Whether you’re serving it for Thanksgiving, Christmas, or a family dinner, this casserole brings together all the flavors you love in a creamy, comforting, and satisfying dish.

Conclusion

In conclusion, this Vegan Broccoli Casserole is a delicious, nutritious, and versatile dish that will impress both vegan and non-vegan guests alike. With a creamy, savory sauce, tender broccoli, and flavorful mushrooms, it’s the perfect side dish for any occasion. Whether you’re celebrating the holidays or just looking for a comforting weeknight meal, this casserole will fit the bill. Plus, with its customizable toppings and ingredient swaps, you can easily make this dish your own. Give it a try, and you’ll see why it’s quickly becoming a favorite in plant-based cooking.

FAQ About Vegan Broccoli Casserole

Can I make this Vegan Broccoli Casserole ahead of time?

Yes, you can prepare the casserole ahead of time by assembling it and refrigerating it before baking. When you’re ready to serve, simply bake or broil it as instructed. This makes it an excellent dish for meal prepping or holiday gatherings.

Can I use frozen broccoli for this recipe?

While fresh broccoli is recommended for the best texture and flavor, frozen broccoli can be used as a substitute. Just be sure to thaw and drain it well to avoid excess moisture in the casserole.

Can I make this Vegan Broccoli Casserole gluten-free?

Absolutely! To make it gluten-free, substitute the whole wheat pastry flour with rice flour or chickpea flour. For the topping, opt for gluten-free breadcrumbs or crackers.

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Vegan Broccoli Casserole


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  • Author: Zoey
  • Total Time: 35 minutes
  • Yield: 4 servings 1x

Description

This Vegan Broccoli Casserole is a creamy, savory, and healthy side dish made with steamed broccoli, sautéed mushrooms, and a rich cashew milk sauce, topped with crispy onions or breadcrumbs. It’s a plant-based twist on a holiday classic, perfect for any occasion.


Ingredients

Scale
  • 1 lb broccoli florets
  • 3/4 lb oyster mushrooms (or other mushrooms like shiitake, chanterelles)
  • 1 small yellow onion, diced
  • 1/4 cup dry white wine
  • 2.25 cups cashew milk
  • 2 tbsp whole wheat pastry flour (or rice flour for gluten-free)
  • 1 tbsp nutritional yeast
  • 2.5 tsp onion powder
  • 1/2 tsp garlic powder
  • 1/2 tsp sea salt (or to taste)
  • 6 sprigs fresh thyme
  • Topping suggestions: crispy onions, salty crackers, panko bread crumbs, corn flakes cereal

Instructions

  1. Steam or boil the broccoli florets until tender but not mushy. Set aside.
  2. In a skillet, sauté the diced onion in olive oil (or water for WFPB compliance) until translucent.
  3. Add the mushrooms to the skillet with a pinch of sea salt and cook until wilted. Add white wine and thyme, cook until most of the liquid evaporates.
  4. In a blender, mix cashew milk, flour, nutritional yeast, onion powder, garlic powder, and sea salt. Blend until smooth.
  5. Add the cashew milk mixture to the skillet with the mushrooms and stir until well combined. Simmer until thickened, about 3-5 minutes.
  6. Gently fold in the cooked broccoli, ensuring it is evenly coated with the sauce.
  7. Transfer the mixture to a casserole dish. Top with crispy onions, breadcrumbs, or crackers.
  8. Broil the casserole for a few minutes until the topping is golden brown and crispy.
  9. Serve hot and enjoy!

Notes

  • For a gluten-free version, use rice flour or chickpea flour in place of whole wheat pastry flour.
  • Store leftovers in an airtight container in the fridge for up to 3 days. This dish can be frozen for up to a month.
  • For added protein, you can include rehydrated soy curls or cooked quinoa in the casserole.
  • If using frozen broccoli, make sure to thaw and drain it well before adding it to the casserole.
  • Prep Time: 10 minutes
  • Cook Time: 25 minutes
  • Category: Side Dish
  • Method: Baking, Sautéing
  • Cuisine: American

Nutrition

  • Serving Size: 1 serving
  • Calories: 131 kcal
  • Sugar: 4g
  • Sodium: 437mg
  • Fat: 2g
  • Saturated Fat: 1g
  • Unsaturated Fat: 1g
  • Trans Fat: 0g
  • Carbohydrates: 21g
  • Fiber: 7g
  • Protein: 8g
  • Cholesterol: 0mg

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