What you’ll need

• Rimmed baking sheet. For roasting cut-side down for caramelization
• Sharp chefs knife. For halving and trimming the sprouts
• Large mixing bowl. For tossing with oil and seasoning
• Parchment paper. To prevent sticking on the sheet

The reason a lot of people say they hate Brussels sprouts is that the sprouts they were served as children were boiled or steamed. Cooked in water, the sprout’s sulfur compounds break down into the smell everyone remembers. Roasted hard and dry, those same compounds do not form, the sugars caramelize, and the outer leaves go crisp. It is a different vegetable, and it is the one that changes minds at the table.

[Photo: a tray of roasted sprouts, deeply browned cut faces, loose crispy leaves scattered around, bacon and balsamic]

Why this works

Boiling and steaming pull the sprout’s harsh sulfurous compounds out into the water and the air, which is the classic smell. High dry heat does not trigger that reaction; instead it drives off moisture, caramelizes the natural sugars, and crisps the leaves through browning. Cut-side down on the pan gives maximum contact with the hot metal, which is where the deep, sweet, nutty flavor comes from.

Space is the other requirement. Sprouts piled together steam each other and stay soft and grey. In a single layer with room around each one, they roast.

What you need

• 2 lb (900g) Brussels sprouts, trimmed and halved (quartered if large)
• 3 to 4 tablespoons olive oil
• Salt and black pepper
• 4 oz (115g) bacon or pancetta, chopped
• 2 tablespoons balsamic vinegar, or 1 tablespoon balsamic glaze
• Optional: 2 tablespoons maple syrup; ¼ cup toasted pecans; grated parmesan; a squeeze of lemon

How to make them

1. Heat the oven hot. 425 to 450°F (220°C). Put a large sheet pan in to preheat.
2. Toss. Toss the sprouts with the oil, salt and pepper. A generous coat of oil helps them caramelize beautifully rather than scorching.

   

3. Arrange cut-side down. Tip onto the hot pan and turn each sprout cut-side down. Give them plenty of space; use two pans if needed. Scatter the bacon among them.

   

4. Roast. 22 to 30 minutes, undisturbed for the first 20, until the cut faces are deep brown and the loose leaves are crisp.

   

5. Finish. Toss on the pan with the balsamic (and maple, if using). Tip onto a platter and finish with nuts, parmesan, or lemon.

   

The details that decide it

• Hot pan, cut-side down. Preheating the pan means the sprouts start browning the moment they land.
• Do not stir for the first 20 minutes. Every time you move them, you interrupt the browning on the cut face.
• Enough oil. Under-oiled sprouts burn on the outside and stay raw inside.
• Balsamic after, not before. Its sugars burn in a hot oven.

Make ahead and scaling for a crowd

Trim and halve the sprouts up to 2 days ahead and keep them in a bag in the fridge. For a crowd, par-roast them to about 15 minutes ahead of time, then finish with a hot 10-minute blast on the day to re-crisp, roasted vegetables lose their crunch sitting around, so the final crisping should be close to serving.

Plan about ½ cup per person. Use two or three pans rather than one deep one; this is the dish that most needs oven space, so slot it in for while the turkey rests and the oven is free and hot. It is the green vegetable in our best Thanksgiving side dishes, and it pairs with the maple carrots for two roasted vegetables that share the oven.

Make ahead, storing and freezing

• Trimmed raw: 2 days refrigerated in a bag.
• Par-roasted: a few hours ahead at room temperature; re-crisp in a hot oven.
• Leftovers: 3 days refrigerated. Re-crisp in a hot pan; do not microwave.
• Freezing: not recommended for roasted sprouts.

From my kitchen

Every “I don’t like Brussels sprouts” I have heard at a table turned into a second helping once the sprouts were properly roasted. It is entirely a cooking-method problem. Hot oven, hot pan, cut-side down, leave them alone. The bacon and balsamic are nice, but the roasting is what does it.

Frequently asked questions

Why do Brussels sprouts smell bad?

Boiling and steaming break down the sprouts’ sulfur compounds, which produces the smell. Roasting them at high heat avoids that reaction entirely and caramelizes their sugars instead.

Should I roast Brussels sprouts cut-side down?

Yes. The flat cut face against a hot pan browns deeply, which is where most of the flavor comes from. Whole sprouts do not develop the same caramelization.

Can I make roasted Brussels sprouts ahead?

Trim them up to 2 days ahead. Par-roast a few hours before serving and finish with a hot 10-minute blast to re-crisp close to dinner.

Why are my roasted sprouts soggy?

The pan was crowded so they steamed, or the oven was not hot enough. Use 425°F or higher, a single layer with space, and two pans if needed.

The bottom line

Hot oven, preheated pan, cut-side down, no crowding, and no stirring for the first 20 minutes. Finish with bacon and balsamic. Roasted properly, sprouts are the side people fight over.

Save it for the method, it is the same one that works on any roasted vegetable.