Golden, crisp-edged cauliflower coated in sweet roasted garlic and a savory, nutty vegan parmesan is the side dish everyone asks for seconds of. This Vegan Roasted Garlic Parmesan Cauliflower combines two simple steps: florets roasted until deeply browned, then tossed in a rich garlic butter and showered with a homemade parmesan made from walnuts, nutritional yeast, and garlic powder.
The flavor comes from roasting the garlic itself. Whole garlic cloves roast right on the pan beside the cauliflower until soft, sweet, and golden. They are mashed into melted vegan butter to make a mellow, caramelized garlic butter that coats every floret, with none of the harshness of raw garlic.
The vegan parmesan takes two minutes in a food processor and is the secret to the cheesy, savory crust. Walnuts bring richness, nutritional yeast brings the umami, and a little salt and garlic powder bring it all together. Sprinkle some over the cauliflower before roasting for a toasty crust, and some at the end for a fresh finish.
Serve it as a holiday side, a game-day snack, or a main dish over pasta or rice. It is naturally gluten-free and makes great leftovers.
This recipe is 100% vegan and dairy-free. It contains tree nuts (walnuts). For a nut-free version, use sunflower seeds or hemp seeds.
Recipe Information
| Prep Time | Cook Time | Total Time | Servings | Calories |
|---|---|---|---|---|
| 10 mins | 25 mins | 35 mins | 4 | ~210 kcal each |
Ingredients
For the Cauliflower
- 1 large head cauliflower (about 2 lb / 900g), cut into bite-sized florets
- 2 tbsp olive oil
- 8 garlic cloves, peeled and left whole
- ½ tsp salt
- ¼ tsp black pepper
For the Vegan Walnut Parmesan
- ½ cup (60g) walnuts
- 3 tbsp nutritional yeast
- ½ tsp garlic powder
- ½ tsp salt
For the Roasted Garlic Butter
- 3 tbsp vegan butter, melted
- The roasted garlic cloves from the pan
- 1 tsp lemon juice
- 2 tbsp chopped fresh parsley
To Serve
- Rice, pasta, or quinoa
- Marinara for dipping
- Green salad
- Lemon wedges
Optional Additions
- ¼ tsp chili flakes
- 1 tsp Italian seasoning
- 2 tbsp panko breadcrumbs
- Extra parmesan for topping
Instructions
- Heat the oven. Preheat the oven to 425°F (220°C) and line a large baking sheet with parchment paper.
- Make the parmesan. Pulse the walnuts, nutritional yeast, garlic powder, and salt in a food processor into fine crumbs. Do not over-process or it will turn into walnut butter.
- Season the cauliflower. Toss the florets and whole garlic cloves with the olive oil, salt, and pepper. Spread on the baking sheet in a single layer.
- Roast. Roast for 15 minutes, then turn the florets and sprinkle with about half of the parmesan. Roast 8–10 more minutes, until golden and tender. Watch the garlic, and remove any cloves that brown too fast.
- Make the garlic butter. Mash the roasted garlic cloves with the melted vegan butter and lemon juice into a paste.
- Toss. Return the cauliflower to a large bowl, add the garlic butter and parsley, and toss gently to coat.
- Finish. Transfer to a serving dish and top with the remaining parmesan.
Pro Tips for the Best Garlic Parmesan Cauliflower
- Roast whole cloves. They turn sweet and mellow instead of bitter.
- Do not over-process the parmesan. Fine crumbs, not paste.
- Add the parmesan halfway. It toasts without burning.
- Dry the florets well. Wet cauliflower steams instead of browning.
- Use a single layer. Crowding makes it soggy.
- Toss with the garlic butter off the heat. It keeps the coating glossy.
- Watch the garlic. Move browned cloves aside if they darken early.
- Serve right away. The topping is crispiest fresh from the oven.
A Few Notes on Ingredients
Cauliflower is low in calories and a good source of fiber and vitamin C. Walnuts provide plant-based omega-3 fats, and nutritional yeast adds savory flavor and is often fortified with B vitamins. Roasted garlic adds sweetness without extra sugar.
This dish is rich from the nuts and butter, so enjoy it as a flavorful side or serve over grains and beans for a main.
Flavor Variations
- Spicy Garlic Parmesan Cauliflower: Add chili flakes and a squeeze of hot sauce.
- Italian Herb Cauliflower: Add oregano and basil to the parmesan.
- Nut-Free Version: Use sunflower seeds or hemp seeds in the parmesan.
- Crispy Panko Version: Mix panko into the parmesan for extra crunch.
Nutritional Highlights (Per Serving)
| Calories | Protein | Carbs | Fiber | Fat |
|---|---|---|---|---|
| ~210 kcal | 8g | 14g | 5g | 15g |
Storage
- Refrigerator: Store in an airtight container for up to 4 days.
- Parmesan: Keep the walnut parmesan in a jar in the fridge for up to 2 weeks.
- Freezer: Freeze the roasted cauliflower for up to 3 months.
- Reheat: Use a 400°F oven or air fryer for 8–10 minutes to re-crisp.
Frequently Asked Questions
Can I use store-bought vegan parmesan?
Yes. Use about ½ cup. The homemade version has a fresher, nuttier flavor.
Can I use an air fryer?
Yes. Air fry at 400°F (200°C) for 12–15 minutes, shaking halfway.
Why did my garlic burn?
Small cloves burn quickly. Use whole cloves, and move any that brown early to the cooler part of the pan.
Can I make it nut-free?
Yes. Replace the walnuts with sunflower seeds or hemp seeds.
Can I make it oil-free?
Roast the cauliflower on parchment with vegetable broth in place of oil, but it will brown less.
How is this different from your other cauliflower recipes?
This one is roasted cauliflower coated in sweet roasted garlic butter and a homemade walnut parmesan. Our Easy Vegan Roasted Cauliflower is the plain four-seasoning base method, and our Crispy Vegan Roasted Cauliflower uses a cornstarch coating for a crunchy exterior.
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