If you’re in search of a vibrant, flavorful dish that is as nutritious as it is delicious, look no further than this Roasted Cauliflower and Red Peppers with Olives recipe. It’s the perfect blend of textures and tastes, with the nutty sweetness of roasted cauliflower, the bright crunch of red peppers, and the briny depth of green olives. Whether you’re looking for a side dish or a light main course, this recipe is sure to impress!
Why It Works Every Time

The beauty of roasting vegetables lies in the caramelization that occurs in the oven. As the cauliflower and peppers roast, their natural sugars develop, creating a sweet and savory profile that is irresistible. Adding olives and capers introduces a delicious briny flavor that balances the sweetness and elevates the dish. Plus, the vibrant colors make it a feast for the eyes, making any meal feel special.
Ingredient List
- 1 head cauliflower, cut into florets
- 1 tablespoon lemon juice, freshly squeezed (about 1/2 lemon)
- 1 cup green olives, pitted (or black, if preferred)
- 1 red bell pepper, stemmed, seeded, and cut into thin strips (or 1 cup cherry tomatoes, halved)
- 2 tablespoons extra virgin olive oil
- 1 tablespoon capers
- 1 cup cremini mushrooms, sliced
- 1/2 teaspoon kosher or sea salt
- Freshly ground black pepper, to taste
- 1/4 cup parsley, chopped (optional)
Before You Start: Equipment
- Large mixing bowl – for tossing the vegetables with oil and seasoning.
- Baking sheet – a rimmed one works best for catching any juices.
- Parchment paper (optional) – for easy cleanup.
- Chef’s knife – for chopping vegetables.
- Cutting board – to protect your countertops while you prep.
How to Prepare Roasted Cauliflower and Red Peppers with Olives

Step 1: Preheat the Oven
Preheat your oven to 425°F (220°C). This high heat will give the vegetables a nice golden color and enhance their flavors.
Step 2: Prepare the Vegetables
In a large mixing bowl, combine the cauliflower florets, sliced red bell pepper (or cherry tomatoes), cremini mushrooms, and green olives.
Step 3: Season the Mixture
Drizzle the vegetables with 2 tablespoons of extra virgin olive oil. Add the freshly squeezed lemon juice, capers, kosher salt, and freshly ground black pepper. Toss everything together until the vegetables are evenly coated.
Step 4: Roast the Vegetables
Spread the vegetable mixture evenly on a baking sheet. Make sure there’s plenty of space between the pieces to ensure they roast rather than steam.
Step 5: Baking Time
Roast in the oven for about 25-30 minutes, or until the cauliflower is tender and golden brown. Stir halfway through to ensure even roasting.
Step 6: Finishing Touches
Once the vegetables are roasted to perfection, remove them from the oven and let them cool slightly. If desired, sprinkle with chopped parsley to add a fresh, vibrant touch before serving.
Seasonal Twists

- For a fall twist, add chunks of butternut squash alongside the cauliflower.
- In spring, swap in asparagus spears for the mushrooms for a fresh crunch.
- In summer, incorporate zucchini or eggplant for a delightful Mediterranean flair.
- During winter, try adding Brussels sprouts for a heartier dish.
Steer Clear of These
Avoid using overripe or mushy vegetables, as they will not roast well and may result in a soggy dish. Also, steer clear of using pre-packaged olives with added preservatives, as they can alter the flavor of your dish.
Save for Later: Storage Tips
This dish can be stored in an airtight container in the refrigerator for up to 3 days. To reheat, place it in the oven at 350°F (175°C) for about 10-15 minutes or until warmed through. You can also enjoy it cold in salads or grain bowls!
Reader Questions
Can I use frozen cauliflower instead of fresh?
While fresh cauliflower is recommended for the best texture, you can use frozen cauliflower. Just make sure to thaw and drain it well before roasting to prevent excess moisture.
What can I serve with this dish?
This Roasted Cauliflower and Red Peppers with Olives pairs beautifully with grilled chicken, fish, or served over a bed of quinoa or couscous for a complete meal.
Can I prepare this dish ahead of time?
You can prep the vegetables and toss them with the oil and seasonings up to a day in advance. Just store them in the refrigerator and roast them just before serving for the best results.
What if I don’t like olives?
If olives aren’t your thing, you can leave them out or replace them with sun-dried tomatoes for a different flavor profile that still enhances the dish.
Because You Liked This
- Creamy Mushroom Soup – A warm, comforting bowl of goodness.
- Roasted Vegetable Salad – Perfect for a light lunch or dinner.
- Simple Baked Quinoa – A wholesome side dish bursting with flavor.
Hungry for More?
If you’re looking for more creative vegetable dishes, stay tuned for our upcoming recipes that celebrate the beauty of fresh produce. From hearty grain bowls to vibrant salads, there’s always a new way to enjoy the bounty of the season.
Roasted Cauliflower and Red Peppers with Olives is not just a side dish; it’s a celebration of flavors that can brighten up any meal. The combination of savory vegetables, tangy olives, and the freshness of lemon creates a dish that is both satisfying and healthy. With just a handful of ingredients and a little time in the oven, you can create a dish that is sure to impress your family and friends. So, gather your ingredients, preheat that oven, and let’s get roasting!

Roasted Cauliflower and Red Peppers with Olives
Equipment
- Large Mixing Bowl
- Baking Sheet
- Parchment Paper
- Chef’s knife
- Cutting Board
Ingredients
- 1 head cauliflower cut into florets
- 1 tablespoon lemon juice freshly squeezed (about 1/2 lemon)
- 1 cup green olives pitted (or black, if preferred)
- 1 red bell pepper stemmed, seeded, and cut into thin strips (or 1 cup cherry tomatoes, halved)
- 2 tablespoons extra virgin olive oil
- 1 tablespoon capers
- 1 cup cremini mushrooms sliced
- 0.5 teaspoon kosher or sea salt
- Freshly ground black pepper to taste
- 0.25 cup parsley chopped (optional)
Instructions
- Preheat your oven to 425°F (220°C). This high heat will give the vegetables a nice golden color and enhance their flavors.
- In a large mixing bowl, combine the cauliflower florets, sliced red bell pepper (or cherry tomatoes), cremini mushrooms, and green olives.
- Drizzle the vegetables with 2 tablespoons of extra virgin olive oil. Add the freshly squeezed lemon juice, capers, kosher salt, and freshly ground black pepper. Toss everything together until the vegetables are evenly coated.
- Spread the vegetable mixture evenly on a baking sheet. Make sure there's plenty of space between the pieces to ensure they roast rather than steam.
- Roast in the oven for about 25-30 minutes, or until the cauliflower is tender and golden brown. Stir halfway through to ensure even roasting.
- Once the vegetables are roasted to perfection, remove them from the oven and let them cool slightly. If desired, sprinkle with chopped parsley to add a fresh, vibrant touch before serving.
Notes
- Use fresh vegetables for the best texture and flavor.
- Store leftovers in an airtight container in the refrigerator for up to 3 days.
- Reheat in the oven at 350°F (175°C) for 10-15 minutes to retain crispness.
