Roasted Broccoli (From Frozen)

5.0 from 1 vote


By Ollie Cartwright

Reading Time: 3 minutes

Turning humble, raw produce into caramelised, crispy-on-the-outside, soft-on-the-inside bites is exactly what you get with this straight from the freezer Roasted Broccoli recipe. Just what busy families need!

Roasted Broccoli From Frozen

I can already hear your skepticism. “Frozen broccoli?!”

The convenience of frozen veggies is undeniable. They’re a lifesaver when you’re rushed off your feet, or when you simply can’t make that trip to the supermarket. But who said convenience has to be boring? Who declared it should lack in flavour or texture?

Should You Thaw Frozen Broccoli Before Roasting?

No, you can roast frozen broccoli directly. However, it might take a slightly longer roasting time compared to fresh broccoli.

How to Make Roasted Broccoli From Frozen

A detailed recipe with full quantities can be found in the recipe card at the bottom of this page.

Step 1: Preheating your oven is vital here! You want to get it super hot, to around 220°C (425°F) or 200°C (375°F) for fan/convection. The high temperature will quickly evaporate the moisture and ice from the outside of the broccoli florets.

Step 2: Although you’re not going to thaw it beforehand, it’s a good idea to remove the excess ice crystals and moisture from the outside the florets to prevent them from steaming (and steaming means no charred outsides).

Lay all the broccoli out on kitchen towel and then dab it to remove as much excess moisture as possible.

Dab Frozen Broccoli

Step 3: Add your broccoli, olive oil, salt, pepper and garlic (with any other seasonings you fancy) to a large bowl then toss to coat. You want every piece to be evenly coated.

Season Broccoli

Step 4: Tip the seasoned broccoli onto a baking sheet in a single layer, giving them plenty of room (again to avoid steaming) then roast in the oven for around 25 minutes. Turn them halfway through to ensure you get an even roast.

Roast Broccoli From Frozen

Step 5: Serve hot, sprinkled with lemon zest and extra salt if needed.

Serve Frozen Broccoli Roasted

Will Roasted Frozen Broccoli Go Crispy?

Roasted frozen broccoli may not achieve the same level of crispiness as fresh broccoli due to its moisture content. However, spreading it out evenly on the baking sheet and roasting it at a high temperature can help with getting some crispy edges.


Don’t let my recipe limit you. It works well as the base for roasting frozen broccoli. Here are just a few things I love to do:

  • Go Cheesy: Once you’ve roasted the broccoli, sprinkle some grated Parmesan or sharp cheddar over the top and pop it back in the oven for a few minutes until the cheese is bubbly and golden.
  • Middle-Eastern Inspired: Once out of the oven, drizzle with tahini and sprinkle with za’atar or sumac. The nuttiness of the tahini complements the roasted notes of the broccoli.
  • Bring Texture: After roasting, sprinkle with slivered almonds or chopped roasted hazelnuts. The added crunch and nuttiness make for the perfect contrast.
  • Add a Dressing: Drizzle a balsamic reduction over the roasted broccoli. Its sweet-tart flavour enhances the broccoli’s charred edges.



You might think that using frozen broccoli renders this unsuitable for storing… But that’s not quite true. Generally, you can freeze food once raw and once again cooked.

Refrigerate: Transfer to an airtight container after cooling roasted broccoli to room temperature. Store in the refrigerator for 3-4 days.

Freeze: Cool broccoli thoroughly, then place in a freezer-safe container or bag. Store frozen for up to 3 months.

Reheat: For best results, reheat in a preheated 190°C (375°F) or 160°C (325°F) for fan/convectionoven for 8-10 minutes. Alternatively, use a microwave, heating in intervals until warm. It may go a little soggy in the microwave, however.

Roasted Broccoli From Frozen Recipe

5.0 from 1 vote
Course: SidesCuisine: InternationalDifficulty: Easy


Prep time


Cooking time


Total time



This is my method for roasting broccoli from frozen

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  • 450 g 5 cup – Frozen Broccoli Florets

  • 3 tbsp 3 tbsp – Olive Oil

  • Lemon Zest

  • Garlic Powder or 1 Garlic Clove, Grated

  • Salt

  • Pepper


  • Preheat Oven
    Begin by preheating your oven to 220°C (425°F) or 200°C (375°F) for fan/convection. This high temperature will help roast the broccoli well and evaporate any excess moisture from the frozen florets.
  • Prep Broccoli
    Spread the frozen broccoli florets on a kitchen towel or paper towel. Pat them down to remove as much surface ice and moisture as possible. It’s okay if they’re still frozen solid, but removing ice crystals will help them roast rather than steam.
  • Seasoning
    Toss the broccoli with olive oil in a large mixing bowl, ensuring they’re well coated. Sprinkle with salt, pepper and garlic.
  • Roast
    Spread the broccoli florets on a baking sheet in a single layer. Ensure they’re spaced out to avoid steaming. Roast in the preheated oven for about 20-25 minutes, turning halfway through, until they’re slightly crispy and have a nice golden colour.
  • Serve
    Once done, you can finish with a sprinkle of fresh lemon zest.

Recipe Video

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