Learn how to prepare a whole roasted cauliflower for holidays or weekend parties. You can prepare this whole roasted cauliflower in many ways, but I have made this in the creamiest and smoothest way in this article. I have well-seasoned cauliflower with vegan mayonnaise and spices.
The preparation took me only 10 minutes, and the rest of the cooking was done in the oven. This dish is a show stopper, whether you are a meat-lover or enjoying it as a side course or a main dish as a vegetarian meal.
This juicy and flavorful Whole Roasted Cauliflower recipe served with my Cornbread Stuffing, Mac and Cheese, and Sweet Potato Pie will be a huge hit.
It’s a day before the holiday but this cauliflower roast is a great last-minute addition to your holiday menu that will be remembered by your guests for years to come like my Lentil Loaf.
Some nights when I feel lazy preparing dinner. I don’t like grabbing the cutting board and chopping the entire cauliflower head. Instead, I start to bake them in the oven. The roasted cauliflower has the perfect crisp layer outside, and inside it has a tender and creamy texture.
This dish looks beautiful, luxurious, and fancy to treat you and your family on a winter night, besides some vegan gravy and rice.

Cauliflower Health Benefits
Cauliflower is a very healthy vegetable that is a necessary source of nutrients. They may look like a white variant of broccoli, but a thick core connects their florets with a few light leaves surrounding them. Only 100g of cauliflower has 92g of water, indicating it can keep us hydrated; also, they are a great source of fiber.
As said earlier, cauliflower is a great source of many important nutrients, and each of its nutrients has its own beneficial side. Here are some must-know health benefits of cauliflower,
Rich in Fiber
Cauliflower is full of fiber, and fiber is very necessary for our digestive health. Fiber can also reduce the risks of many chronic diseases. One cup of cauliflower has 3g of fiber; that amount of fiber is recommended for 10% of our daily fiber needs.
Great Source of Antioxidants
Antioxidants are well known for decreasing inflammation and guarding us against many chronic diseases. Cauliflower has a significant amount of antioxidants to provide us with those health benefits.
Helps with Weight Loss
Cauliflower is low in calories, and its fiber can increase the feeling of fullness after having a meal. The feeling of fullness makes us feel no hunger quickly after finishing that meal. This feeling of fullness caused by fiber can help us manage weight loss.
Rich in Choline
Choline is a nutrient that many people lack. They have a big role in maintaining the wholeness of cell membranes and supporting metabolism. Also, they have a role in synthesizing DNA
High in Sulforaphane
Sulforaphane is a plant compound with many beneficial effects, such as it helps to decrease the risks of heart disease. Also, this compound can prevent diabetes and reduce cancer risks.
Great Alternative to Legumes and Grains
Cauliflower can be used in recipes as an alternative to grains and legumes. That is great because you get to eat more vegetables or maintain a low-carb diet rather than eating carbs.

How To Make Whole Roasted Cauliflower?
- Preheat oven to 425 degrees F
- Spray the casserole dish and set aside
- Meanwhile, prepare the Vegan Gravy and set it aside
- Trim and discard tough stems and cauliflower leaves,
- In a medium bowl, mix vegan mayonnaise and dry seasonings to form a paste.
- Place cauliflower in a bowl, and smother mayonnaise paste all over the cauliflower head, base, and in between the florets as much as possible.
- Transfer cauliflower to the casserole dish.
- Add potato and carrot chunks to the bowl and toss with the remaining mayo mixture in the base of the bowl.
- Add seasoned potato, carrots, and half of the vegan gravy to the casserole dish and place them around the cauliflower.
- Cover the casserole dish with parchment paper and foil and bake for 1 hour.
- After 1 hour, remove the cover and reduce oven temperature to 400 degrees and bake for about 20 minutes or until vegetables are tender and golden Brown.
- Before serving, smother cauliflower and vegetables with the remaining half of the gravy, garnish with fresh rosemary sprigs and serve.
How to Make Vegan Mayonnaise at Home?
You can easily prepare homemade vegan mayonnaise with only 4 ingredients and just 5 minutes! This vegan mayo is so tasty, rich, creamy, and cholesterol-free. The taste of this mayo tastes exactly like regular mayo.
Use an immersion blender and add almond milk or soy milk, olive oil, apple cider vinegar, and salt. Start combining all the ingredients in the blender cup. Move the blender cup up and down to mix the oil properly.
If the mayo turns thick, you can add some milk, and it becomes watery, then pour some oil to get the perfect mayo consistency. You can keep the leftover vegan mayo in the refrigerator for about 4 to 7 days.
How Do You Make Sure There Are No Worms In Cauliflower?
Wash cauliflower with salty water. Fill the sink or a large mixing bowl with warm water. Add salt and mix to dissolve. do ž
Can I Prepare Whole Roasted Cauliflower Ahead of Time?
This recipe is best to enjoy fresh and straight out of the oven, but you can prepare some parts of the recipe.
You can wash and prepare the cauliflower and mix up the mayonnaise. Start baking the prepared cauliflower when you are ready. You can also prepare vegan gravy as a side dish for this.
How to Freeze Whole Roasted Cauliflower?
You can store leftover whole roasted cauliflower in the freezer. Simply chop the cauliflower into pieces, let them cool entirely, and store them in an air-tight container or sealed bag.
You can reheat them in the microwave or oven and some vegan parmesan or parsley on top!
Why Does My Roasted Cauliflower Get Mushy?
Roasted cauliflower can be mushy if the cauliflower is not cooked long enough. Also, you need to uncover the casserole pan so the cauliflower will be cooked until crispy and golden brown.
Why Is My Roasted Cauliflower Tough?
Your roasted cauliflower is tough because it is not cooked, it needs to cook longer until the cauliflower is tender.
Additional Tips
- Get a paring knife to cut the wooden stalks of cauliflower while keeping the head in shape and intact.
- You can serve the whole roasted cauliflower in a white serving platter on display beside some rice and gravy.
- Add seasonings and mayonnaise perfectly around the cauliflower, and don’t leave any spot. You can also add some spices like paprika to enjoy spicy cauliflower.

Other Cauliflower Recipes:
- Jamaican Jerk Cauliflower
- Vegan Cauliflower Hashbrowns
- Cauliflower Nuggets
- Cauliflower Casserole
- 15 Best Vegan Cauliflower Recipes
If you make this Whole Roasted Cauliflower recipe snap a photo and hashtag #healthiersteps — we love to see your recipes on Instagram, Facebook & Twitter!
Categories
- Categories: Gluten-Free, Vegan
- Courses: Entrée, Main Course
- Cuisine: American
- Seasons: Christmas, Thanksgiving
Nutrition
(Per portion)- Energy: 110 kcal / 460 kJ
- Fat: 8 g
- Protein: 4 g
- Carbs: 8 g
Cook Time
- Preparation: 20 min
- Cooking: 1 h 30 min
- Ready in: 1 h 50 min
- For: 6
Ingredients
- 1 medium whole cauliflower head, leaves and hard stem removed
- 1/2 cup vegan mayonnaise
- 2 tablespoons nutritional yeast flakes
- 1 teaspoon onion powder
- 1 teaspoon garlic powder
- 1 teaspoon thyme
- 1 teaspoon salt
Additional Ingredients
- 1 batch Vegan Gravy, Click on Link
- Fresh sprigs of rosemary, for garnishing
- 2 medium potatoes, scrubbed and chopped
- 2 medium carrots, washed and chopped
Instructions
- Preheat oven 425 degrees F. Spray casserole dish and set aside
- Meanwhile, prepare the Vegan Gravy and set it aside
- Trim and discard tough stems and cauliflower leaves, In a medium bowl, mix vegan mayonnaise and dry seasonings to form a paste.
- Place cauliflower in a bowl, and smother mayonnaise paste all over the cauliflower head, base, and in between the florets as much as possible..Transfer cauliflower to the casserole dish.
- Add potato and carrot chunks to the bowl and toss with the remaining mayo mixture in the base of the bowl. Add seasoned potato, carrots, and half of the vegan gravy to the casserole dish and place them around the cauliflower.
- Cover the casserole dish with parchment paper and foil and bake for 1 hour. Meanwhile, prepare the Vegan Gravy and set aside. After 1 hour, remove the cover and reduce oven temperature to 400 degrees and bake for about 20 minutes or until vegetables are tender and golden Brown.
- Before serving, smother cauliflower and vegetables with the gravy, garnish with fresh rosemary sprigs and serve.
This is so yummy and love that it’s easy to make it as well. Thank you for sharing and will try this one.
This looks like an awesome recipe! I’m sure my husband will enjoy this meal.
Wow….this is a well-done cauliflower cake! For a moment there, I thought I was looking at meatloaf or chicken. Let me save your recipe. I look forward to giving it a try.
Oh my this looks absolutely delicious and tasty I would really love to try this out
Oh Michelle, this looks gorgeous. I’ve been wanting to try a whole roasted cauliflower recipe for awhile, and I think this is the sign I’ve been waiting for! I love that you’ve used really simple ingredients but with a lot of flavor.
I love how this is prepared! The presentation is great. We are a vegetarian family and this would be fun to make.
Wow, this Whole Roasted Cauliflower dish looks amazing! I love how it’s packed with all the classic Thanksgiving flavours, but without any meat. The combination of herby potatoes and carrots, along with the indulgent gravy, sounds like the perfect complement to the roasted cauliflower. It would definitely make for a stunning centrepiece on any holiday table. I can’t wait to try this recipe!
YUM! This looks delicious! I am definitely going to try to make this. Thanks for the easy to follow recipe.
I have been searching for a whole roasted cauliflower recipe. I’m so excited to find this one. The flavor sounds delicious and I love it’s meatless!
This is one of the best roasted cauliflower recipes I’ve made. I love the flavors, and the texture is fantastic.