Vegan Broccoli Quinoa Casserole Recipe

Learn how to make the best homemade vegan broccoli quinoa casserole with this easy baking recipe. This protein-rich comfort dish features fluffy quinoa, tender broccoli, and a creamy dairy-free sauce that bakes to perfection under a crispy breadcrumb topping – weeknight dinner solved!
Difficulty:
Beginner
Prep Time:
20 mins
Cook Time:
35 mins
Serves:
6 servings
An overhead shot of a rustic ceramic casserole dish filled with the vibrant green broccoli quinoa bake, steam gently rising from its golden-brown breadcrumb topping. The casserole is photographed in soft natural light, highlighting the contrasting textures of the crunchy top layer and the creamy quinoa mixture beneath. A wooden serving spoon rests beside the dish, having just scooped a portion revealing the moist, colorful interior studded with bright green broccoli florets and red flecks of quinoa. Scattered fresh herbs and lemon wedges adorn the wooden table surface, while a small bowl of nutritional yeast sits nearby, suggesting the dairy-free nature of this wholesome plant-based comfort food.

Ingredients

<ul class="ingredients-main-list"><li class="ingredients-single-item">200g quinoa, rinsed thoroughly</li><li class="ingredients-single-item">500ml vegetable broth</li><li class="ingredients-single-item">400g broccoli florets, cut into small pieces</li><li class="ingredients-single-item">2 tbsp olive oil</li><li class="ingredients-single-item">1 medium onion, finely diced</li><li class="ingredients-single-item">3 garlic cloves, minced</li><li class="ingredients-single-item">250ml plant-based milk (oat or almond)</li><li class="ingredients-single-item">3 tbsp nutritional yeast</li><li class="ingredients-single-item">2 tbsp cornstarch mixed with 3 tbsp water</li><li class="ingredients-single-item">1 tsp dried thyme</li><li class="ingredients-single-item">1 tsp smoked paprika</li><li class="ingredients-single-item">½ tsp turmeric (for color)</li><li class="ingredients-single-item">Salt and black pepper to taste</li><li class="ingredients-single-item">For the topping:</li><li class="ingredients-single-item">100g panko breadcrumbs (check for vegan ingredients)</li><li class="ingredients-single-item">3 tbsp olive oil</li><li class="ingredients-single-item">2 tbsp nutritional yeast</li><li class="ingredients-single-item">1 tsp dried oregano</li></ul>

Equipment

<ul class="equipment-main-list"><li class="equipment-single-item">23cm x 33cm (9x13 inch) baking dish</li><li class="equipment-single-item">Medium saucepan</li><li class="equipment-single-item">Large mixing bowl</li></ul>

Directions

<ol class="no-list-style"><li class="MethodStepper"><h4 class="step-title">Step 1</h4>Preheat your oven to 190°C (375°F) and lightly grease your baking dish with a small amount of olive oil. This temperature will ensure your casserole develops a beautifully golden crust while cooking thoroughly.</li><li class="MethodStepper"><h4 class="step-title">Step 2</h4>Rinse your quinoa thoroughly under cold running water using a fine-mesh sieve. This removes the natural saponins coating the quinoa which can cause a bitter taste. Place quinoa and vegetable broth in a medium saucepan, bring to a boil, then reduce heat to low, cover and simmer for 15 minutes until the liquid is absorbed and the quinoa is tender and fluffy. Remove from heat and let it rest, covered, for 5 minutes.</li><li class="MethodStepper"><h4 class="step-title">Step 3</h4>While the quinoa cooks, bring a pot of water to a boil and blanch the broccoli florets for just 2 minutes until they're bright green and slightly tender but still firm. This pre-cooking ensures they'll be perfectly done in the finished casserole without becoming mushy. Immediately drain and rinse under cold water to halt the cooking process - this technique preserves the broccoli's vibrant color and crisp-tender texture.</li><li class="MethodStepper"><h4 class="step-title">Step 4</h4>In a large saucepan, heat 2 tablespoons of olive oil over medium heat. Add the diced onion and sauté for 4-5 minutes until soft and translucent. Add the minced garlic and cook for another 30 seconds until fragrant, being careful not to let it burn as this would create bitter flavors.</li><li class="MethodStepper"><h4 class="step-title">Step 5</h4>Pour in the plant-based milk, nutritional yeast, dried thyme, smoked paprika, and turmeric. Whisk to combine and bring to a gentle simmer. The nutritional yeast provides a cheesy, umami flavor without dairy, while the turmeric adds a lovely golden color that mimics traditional cheese sauce.</li><li class="MethodStepper"><h4 class="step-title">Step 6</h4>Once the mixture is simmering, add the cornstarch slurry (cornstarch mixed with water) while whisking continuously. Continue to cook for 2-3 minutes until the sauce thickens enough to coat the back of a spoon. The cornstarch needs to reach a certain temperature to fully activate its thickening properties, so don't rush this step.</li><li class="MethodStepper"><h4 class="step-title">Step 7</h4>In a large mixing bowl, combine the cooked quinoa, blanched broccoli, and your creamy sauce. Season generously with salt and pepper to taste, ensuring you season well as the quinoa can absorb quite a bit of flavor. Gently fold everything together until evenly distributed, being careful not to mash the broccoli.</li><li class="MethodStepper"><h4 class="step-title">Step 8</h4>Transfer the mixture to your prepared baking dish, spreading it out evenly. In a small bowl, combine the panko breadcrumbs, 3 tablespoons olive oil, 2 tablespoons nutritional yeast, and dried oregano. Mix until the breadcrumbs are evenly coated with oil - this ensures they'll turn beautifully golden and crispy rather than dry out in the oven.</li><li class="MethodStepper"><h4 class="step-title">Step 9</h4>Sprinkle the breadcrumb mixture evenly over the casserole, creating a consistent layer that will become your crispy topping. Press very gently to adhere the crumbs to the surface without compacting them too much - you want to maintain their light texture.</li><li class="MethodStepper"><h4 class="step-title">Step 10</h4>Bake uncovered in the preheated oven for 25-30 minutes, until the topping is golden brown and the edges are bubbling slightly. If the top is browning too quickly, loosely cover with foil and continue baking. A perfectly baked casserole should have a crisp top with a moist but not watery interior.</li><li class="MethodStepper"><h4 class="step-title">Step 11</h4>Remove from the oven and let the casserole stand for 5-10 minutes before serving. This resting period allows the casserole to set slightly, making it easier to portion and serve while allowing the flavors to meld together. Serve warm, garnished with fresh herbs if desired. The casserole will keep refrigerated for up to 4 days and also freezes beautifully for up to 3 months.</li></ol>

FAQs

Find answers to your most pressing questions about this delicious recipe right here.

What ingredients are used in Vegan Broccoli Quinoa Casserole?

The key ingredients include quinoa, broccoli florets, plant-based milk, nutritional yeast, onion, garlic, herbs, spices, and a crunchy panko breadcrumb topping. This protein-rich casserole is completely dairy-free while still delivering creamy, comforting flavour.

How to cook Vegan Broccoli Quinoa Casserole at home?

Learn how to cook Vegan Broccoli Quinoa Casserole by first cooking quinoa in vegetable broth and blanching broccoli. Then make a creamy dairy-free sauce with plant milk and nutritional yeast, combine everything, top with seasoned breadcrumbs, and bake at 190°C until golden and bubbling. The result is a protein-rich, comforting meal perfect for weeknight dinners.

Can quinoa be substituted with another grain in this casserole?

Yes, you can substitute quinoa with other grains like brown rice, farro, or even barley. Each will provide a different texture and cooking time may vary. Rice will create a more traditional casserole feel, while farro or barley will give a chewier, nuttier result.

What makes the sauce creamy without dairy products?

The creamy texture comes from the combination of plant-based milk thickened with cornstarch, while nutritional yeast provides the cheesy flavour. The turmeric adds a golden colour similar to cheese sauce. This technique creates a satisfying, rich sauce without any dairy components.

How can I make this casserole more protein-rich?

Boost the protein by adding white beans, chickpeas, or crumbled tofu to the mixture. You could also incorporate plant-based protein crumbles or chopped tempeh. Adding 2-3 tablespoons of hemp seeds or pumpkin seeds to the breadcrumb topping will provide extra protein and crunch.

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The creamy sauce and crunchy topping mask the 'healthy' aspects perfectly!", "name": "Family Favorite", "reviewRating": { "@type": "Rating", "ratingValue": "5" } }, { "@type": "Review", "author": "Sven Johansson", "datePublished": "2024-06-08", "reviewBody": "Meal prep lifesaver! I made this on Sunday and portioned it out for lunches all week. It reheats beautifully and kept me satisfied through long workdays. The protein from the quinoa makes it much more filling than most vegetarian dishes I've tried.", "name": "Perfect for Meal Planning", "reviewRating": { "@type": "Rating", "ratingValue": "5" } }, { "@type": "Review", "author": "Natasha Chen", "datePublished": "2024-06-12", "reviewBody": "Converted my non-vegan husband! He usually complains when I make plant-based meals, but he went back for seconds with this casserole. The texture combination is perfect - fluffy quinoa, tender broccoli, and that amazing crunchy top. 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