Easy Parmesan Roasted Cauliflower (Easy Sheet Pan Dinner Side!)

This easy parmesan roasted cauliflower is so addictive, delicious, and simple to make. Cauliflower is rich in vitamin C, K, protein, fiber, and many other nutrients, making it a great choice to add into your meals.

Cauliflower topped with Parmesan Cheese and Onion on a Cookie Sheet Pan Pre-Oven with Black Text Easy Parmesan Roasted Cauliflower

Yep, I’ve been on a veggie roasting rampage.  No denying it.  The veggies never saw it coming.

No prisoners.

I’ve roasted green beans, asparagus, carrots, broccoli, sweet potatoes, beets, and – yep – now I’ve roasted cauliflower.

No veggie or starch is safe.

Bwa ha ha.

Separated Ingredients Including Cauliflower, Onion, Parmesan Cheese and Garlic Ready To Assemble

Why have I turned into the evil veggie roasting maniac that stands before you?

It’s very simple: I like easy veggie sides.

And, as we established in my last post on my Lemon Roasted Asparagus, I also like easy clean up.

Because: duh.  Right?

For those two very important reasons plus many others (like roasting brings out more flavor and texture in vegetables, roasting veggies is super quick and requires hardly any ingredients or prep work, and so on), I’ve been roasting my veggie sides quite a lot lately.

Hence: the maniacal rampage of sorts.

Why Roast Cauliflower?

Cauliflower is one of those vegetables that is perfect for roasting.  It holds up really well to the heat, can get a little charred yet still taste amazing, and is large enough to be tender on one side and crispy roasted perfection on the other.  Just adding some parmesan and a few other simple flavors (like I have with the garlic, onion, salt, and pepper) is all you need for a filling, flavorful, and highly addictive easy veggie dinner side.

And if that’s not enough to sell ya on the roasted cauliflower goodness, cauliflower happens to be super healthy for you, too.

Cauliflower topped with Parmesan Cheese, Garlic, Olive Oil, and Onion on a Cookie Sheet Pan Pre-Oven

Is Cauliflower Healthy?

In addition to being great roasted, cauliflower is quite healthy and carries a ton of health benefits, including:

  • high in fiber
  • high in vitamin C
  • high in vitamin K
  • high in protein
  • tons of minerals and vitamins

Pretty much: cauliflower is one power-packed roasted veggie to add to your next meal.

And I’m gonna be completely honest here – I may have turned just this “side” into a whole meal before.  Once or twice.

I mean..why not?  It’s a well-balanced side dish that can be filling enough for a full meal if you wanted.

Overhead View of Entire Sheet Pan with Cauliflower topped with Parmesan Cheese, Garlic, Onion, and Olive Oil After Roasting

How To Freeze Roasted Cauliflower

Make too much of this easy parmesan roasted cauliflower and want to store it for later?  Good plan!

While this roasted cauliflower will last up to 5 days in an air-tight container in the fridge, you can also store it in the freezer for up to 3-4 months.  Just freeze it in an airtight container or heavy-duty freezer bag, or wrap tightly with heavy-duty aluminum foil.

If you have the time, I recommend laying it out flat on a rimmed baking sheet lined with parchment paper first so that the cauliflower can freeze individually.  That way, when it’s time to combine everything together, you don’t have a big clump but, instead, perfectly frozen roasted cauliflower to be thawed and enjoyed later.

How To Reheat Roasted Cauliflower

Fortunately, there are a few easy ways to reheat roasted cauliflower that’s been left-over, which I’ve listed below:

  • Microwave: Place in the microwave in a microwave-safe container, and microwave on high for 1-2 minutes, until heated through.
  • Oven: Place on a rimmed baking sheet lined with parchment paper at heat through at 350 degrees F until heated through, about 8-10 minutes.
  • Stove: Left-over roasted cauliflower can also be reheated in a skillet on the stove over medium-high heat.  I’d recommend adding a little extra olive oil.  Cook 4-6 minutes, or until heated through.

Personally, I think the best way to reheat roasted cauliflower is in the oven because it keeps a lot of the crispness and texture from the roasting.  If you’re tight on time and don’t want to wait for the oven to preheat, however, microwaving is another fine choice and is much faster.

Close-Up View of Entire Sheet Pan with Cauliflower topped with Parmesan Cheese, Garlic, Onion, and Olive Oil After Roasting

What is Roasted Cauliflower Good With?

If you’re looking to pair roasted cauliflower with another lean protein, I’d recommend the following:

More Roasted Veggie Recipes!

Alright!  Now that we’re all on the roasted cauliflower and roasted vegetables bandwagon (woot!),  check out my absolute favorite roasted veggie sides that will make your life and your dinner so much easier:

Seriously: if you haven’t tried roasting your own vegetables yet, it’s time you learn how to roast cauliflower to absolute parmesan perfection with this recipe.  It’s so easy!

Roasted Cauliflower Recipe Video

5 from 2 votes
Easy Parmesan Roasted Cauliflower - Square Recipe Preview Image
Easy Parmesan Roasted Cauliflower
Prep Time
10 mins
Cook Time
25 mins
Total Time
35 mins
This easy parmesan roasted cauliflower takes cauliflower to another level. It’s so easy to make and has tons of flavor.
Categories: Side Dish
Difficulty: Easy
Keyword: baked cauliflower, roasted cauliflower, roasted cauliflower recipes
Servings: 4 cups
Calories: 122 kcal
Author: Lacey Baier
  • 1 large head cauliflower, cut into florets
  • 1/2 yellow onion, thinly sliced
  • 3 large garlic cloves, peeled
  • 2 tbsp olive oil
  • 1/2 tsp sea salt
  • 1/4 tsp ground black pepper
  • 1/3 cup parmesan, grated
  • 1 tbsp. Italian parsley, chopped, for optional garnish
  1. First, preheat your oven to 425 degrees F and line a rimmed baking sheet with parchment paper.

  2. Add the cauliflower florets, thinly sliced yellow onion, peeled garlic cloves, olive oil, sea salt, ground black pepper, and parmesan to the baking sheet and toss to coat evenly.
  3. Place into the oven and roast, tossing occasionally, until the cauliflower is just tender, about 20-25 minutes.

Recipe Video

Recipe Notes

Cauliflower is rich in vitamin C, K, protein, fiber, and many other nutrients, making it a great choice to add into your meals.

Nutrition Facts
Easy Parmesan Roasted Cauliflower
Amount Per Serving (1 cup)
Calories 122 Calories from Fat 68
% Daily Value*
Fat 7.6g12%
Saturated Fat 1.7g9%
Cholesterol 6.4mg2%
Sodium 395.2mg16%
Carbohydrates 7.8g3%
Fiber 3.1g12%
Sugar 2.3g3%
Protein 5.4g11%
* Percent Daily Values are based on a 2000 calorie diet.

This post contains affiliate links for products I use regularly and highly recommend.

Lacey Baier

Hey y’all, I’m Lacey Baier and I’m so glad you’re here! I’m a healthy lifestyle influencer and the creator of this clean-eating blog and YouTube channel, A Sweet Pea Chef. My recipes have been published on Food Network, Good Morning America, FoxNews, Tastemade, Fitness Magazine, and much more. I live in Dallas, Texas with my husband and four kiddos. Let’s get started!

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