Simple Roasted Cauliflower

Simple roasted cauliflower is tossed with olive oil, fresh rosemary, salt and pepper, then roasted until tender with lightly browned edges. It makes an easy side dish with a short ingredient list and little hands-on work.
Ingredients
- 1.25 ml (¼ tsp)black pepper
- 1.25 ml (¼ tsp)salt
- 22.5 ml (1½ tbsp)olive oil
- 15 ml (1 tbsp), chopped (or 5 ml (1 tsp) dried rosemary)fresh rosemary
- 1.42 L (6 cups)cauliflower florets
Instructions
- 1
Preheat the oven
Heat the oven to 230°C (450°F).
- 2
Season the cauliflower
In a large bowl, toss the cauliflower florets with the rosemary, olive oil, salt and pepper. Spread them over a large baking sheet, using two sheets if they would be crowded on one.
- 3
Roast and stir
Roast for 15 minutes, then take the baking sheet out of the oven and stir the cauliflower.
- 4
Finish roasting
Return the cauliflower to the oven and roast for a further 10 minutes, or until tender and lightly browned.
What is roasted cauliflower?
Roasted cauliflower is a simple vegetable side in which florets cook in a hot oven until tender and browned at the edges. It is a familiar American-style preparation, though roasting cauliflower is enjoyed in many cuisines.
This version keeps the seasoning spare: rosemary adds an aromatic note, while olive oil helps the florets roast rather than dry out.
Nutrition and macros by portion
The nutrition label shows one serving as written: 40 calories, 1g protein, 4g carbs, 3g fat.
| Portion | Adjustment | kcal | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| Lighter | Use less olive oil | 28 kcal | 1g | 3g | 2g |
| This serving | As written | 40 kcal | 1g | 4g | 3g |
| Hungry | Serve a larger portion | 60 kcal | 2g | 6g | 4g |
The cauliflower supplies most of the carbohydrates and a little protein, while the olive oil accounts for most of the fat. Pair a serving with a protein-rich main and a grain or another vegetable if you want a more complete plate.
Choosing and cutting the cauliflower
Even florets: Cut the cauliflower into pieces of roughly similar size so they cook at a similar pace. Smaller pieces will brown sooner, so keep an eye on them.
Making room on the tray
Spread out: Arrange the seasoned florets in a single layer with space around them. If they are crowded, use two baking sheets as directed; close-packed cauliflower is more likely to steam than brown.
Rosemary and oil
Fresh rosemary: Chop it before tossing so its flavour is distributed through the florets. The recipe also allows 1 tsp of dried rosemary in place of the fresh amount.
Olive oil: Toss until the florets are lightly coated, with the salt and pepper spread as evenly as possible.
Checking for doneness
Tender centre: After the full 25 minutes of roasting, pierce a floret with a fork to check that it is tender. The edges should be lightly browned, not deeply charred.
Serving ideas
Alongside a main: Serve it hot with roasted chicken, fish, beans or another simple main. Its mild seasoning also works with a grain dish or a more strongly flavoured sauce.
Recipe notes & tips
- Dry the cauliflower well after washing so excess water does not slow browning.
- Cut florets to a similar size for more even cooking.
- Use two baking sheets if the florets cannot fit in a single uncrowded layer.
- Stir the florets after the first 15 minutes so they roast more evenly.
- Begin checking for tenderness at the end of the stated roasting time.
Variations
- Dried rosemary: Use 1 tsp dried rosemary instead of the fresh rosemary.
- More browning: Give the florets extra space on the baking sheet so their edges can colour.
- Garlic: Add chopped garlic with the other seasonings for a savoury variation.
- Lemon: Finish with a squeeze of lemon after roasting for a bright flavour.
- Spice: Add a pinch of chilli flakes to the bowl when seasoning the cauliflower.
Common mistakes to avoid
- Crowding the tray: The florets can steam instead of brown; divide them between two sheets.
- Uneven pieces: Large and small florets finish at different times; cut them to similar sizes.
- Skipping the stir: The cauliflower may colour unevenly; turn it after 15 minutes.
- Over-roasting: The florets can become too soft or dark; check tenderness and browning after the final 10 minutes.
- Uneven seasoning: Some pieces may taste bland; toss thoroughly in the bowl before spreading them out.
How to store
Refrigerate cooled leftovers in an airtight container for up to 3 days. Reheat on a baking sheet in a hot oven until warmed through; the microwave is quicker but will soften the edges.
Frequently asked questions
Can I use dried rosemary?
Yes. The ingredient list gives 1 tsp dried rosemary as an alternative to 1 tbsp chopped fresh rosemary.
Do I need to use two baking sheets?
Only if the cauliflower would be crowded on one. A single, well-spaced layer helps the florets roast and brown.
How do I know when the cauliflower is done?
It should be tender when pierced with a fork and lightly browned. Roast for 15 minutes, stir, then continue for 10 minutes or until it reaches that point.
Can I prepare the cauliflower ahead?
You can cut the florets ahead and keep them refrigerated. For the best texture, toss with the seasonings and roast shortly before serving.
Can I make this with frozen cauliflower?
The recipe is written for florets and does not specify frozen cauliflower. Frozen florets may release more moisture, so dry them well and leave plenty of space on the baking sheet.
Cook it from the original
This recipe comes from diabetesfoodhub.org. Their page has the author’s own photos, notes and tips — the best place to cook it from.
Open the recipe on diabetesfoodhub.org