# Crispy Roasted Brussels Sprouts

Roasted Brussels sprouts turn sweet and nutty, with dark crispy leaves and a tender center. They are a world away from boiled sprouts.

A quick balsamic and maple glaze at the end adds a sticky finish, and a squeeze of lemon keeps them fresh. They are ideal alongside chicken, pork or a holiday roast.

- Total time: 35 min (prep 10 min, cook 25 min)
- Serves: 4
- Per serving (estimated): 150 kcal, 5 g protein
- Cuisine: American. Category: Side dish. Diet: vegan, gluten-free, dairy-free.

## Ingredients

- 700 g Brussels sprouts
- 3 tbsp olive oil
- 3/4 tsp kosher salt
- 1/4 tsp black pepper
- 1 tbsp balsamic vinegar
- 1 tbsp maple syrup
- 1 tbsp lemon juice

## Method

1. Heat the oven to 425°F (220°C) with a large rimmed baking sheet on the middle rack.
2. Trim the stem ends and pull off any loose or yellow outer leaves. Cut each sprout in half from top to bottom. Quarter very large ones.
3. Toss the sprouts in a large bowl with the olive oil, salt and pepper until well coated.
4. Carefully place them cut side down on the hot baking sheet in a single layer. Press each one so the flat side touches the pan.
5. Roast 20 to 25 minutes without stirring, until the cut sides are deep golden brown and the outer leaves are dark and crisp.
6. Mix the balsamic vinegar and maple syrup in a small bowl.
7. Pour over the hot sprouts, toss, and roast 2 minutes more until sticky and glossy.
8. Finish with the lemon juice and taste for salt. Serve right away.

## Why it works

- Cutting the sprouts in half and roasting them cut side down gives a flat surface that browns deeply against the hot pan.
- High heat drives off water quickly, so the sprouts caramelize instead of steaming.
- Browning transforms the bitter compounds into sweeter, nuttier ones.
- The loose outer leaves fall away and crisp up like little chips.
- Glazing at the end keeps the sugar from burning during the long roast.

## The science

- **Why sprouts taste bitter.** Brussels sprouts contain sulfur compounds called glucosinolates. Boiling can release harsh sulfur flavors, while roasting browns the surface and creates sweet, nutty flavor that balances the bitterness. This is why the dark, crispy edges taste best, and why pale sprouts can taste harsh and bitter.
- **Cut side down.** The flat cut surface touches the pan fully, so it browns evenly in a deep golden disc. Tossing them on the pan would leave only a few brown spots. Placing each one by hand is worth the extra minute.
- **Glaze late.** Sugars in balsamic vinegar and maple syrup burn quickly at high oven heat if left too long. Adding them in the last 2 minutes gives sticky caramel without bitterness. This is why the dark, crispy edges taste best, and why pale sprouts can taste harsh and bitter.

## Tips

- Pick sprouts of similar size so they finish together.
- Do not stir during the first 20 minutes; leaving them still builds the brown crust.
- Taste one before glazing, and if they are not dark enough, roast 3 to 5 minutes more.

## Mistakes to avoid

- Boiling first, which makes them mushy and sulfurous; roast from raw.
- Crowding the pan, which steams them; use two pans if needed.
- Adding the glaze at the start, which burns; add it after the sprouts are browned.

## Variations and swaps

- Toss with 4 slices of cooked, crumbled bacon after roasting.
- Finish with 30 g grated Parmesan and an extra squeeze of lemon.
- Use 1 tbsp Dijon mustard and 1 tsp honey instead of the balsamic and maple.
- Swap maple syrup for honey if you do not need it vegan.
- Swap balsamic for apple cider vinegar for a sharper finish.
- Swap olive oil for avocado oil if you want a more neutral flavor.

## Storage

Refrigerate leftovers within 2 hours and eat within 3 to 4 days. Reheat in a 400°F (200°C) oven or air fryer for 5 to 8 minutes until hot and crisp.

## FAQ

**How long do you roast Brussels sprouts at 425°F?**

Roast Brussels sprouts at 425°F (220°C) for 20 to 25 minutes. They are done when the cut sides are deep golden and the outer leaves are crisp.

**How do you make Brussels sprouts not bitter?**

Roast them at high heat until deeply browned. Browning creates sweet, nutty flavors that balance the bitterness, and a little acid and sweetener at the end help more.

**Do you have to cut Brussels sprouts in half before roasting?**

Halving gives you a flat surface that browns well, so it is best. Whole sprouts take longer and brown only on the outside.

**Should I soak Brussels sprouts before roasting?**

No. Soaking adds water, which prevents browning. Rinse them, then dry them well before tossing with oil.

**Can I make roasted Brussels sprouts ahead?**

Yes, but they are crispiest fresh. Roast them up to a day ahead, then reheat at 400°F (200°C) for 5 to 8 minutes before serving.

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Source: https://cookingscientist.com/recipes/roasted-brussels-sprouts (Cooking Scientist). Learn the science of cooking in the Cooking Scientist app for iPhone and iPad: https://apps.apple.com/app/id6830326846