Roasted Brussels Sprouts with Bacon (Crispy Holiday Side Dish)

Some side dishes sit politely on the holiday table and get ignored. This one gets fought over. These roasted Brussels sprouts with bacon come out of the oven deeply caramelized, with crispy charred edges, golden cut sides, and smoky bacon woven through every bite. A garlicky finish and a splash of balsamic at the end tie it all together, and suddenly the vegetable everyone used to push around the plate is the first dish to disappear.

And here is a quiet bonus: beneath all that crispy, bacon-y glory, Brussels sprouts are little nutritional powerhouses, high in fiber, vitamin K and vitamin C (see Healthline’s full nutrition breakdown). Holiday indulgence you can feel good about.

Here is the best part: it is a sheet-pan recipe that takes about 40 minutes, and most of that is hands-off oven time. Halve the sprouts, lay them cut-side down, scatter bacon over the top, and let a hot 425°F oven do the heavy lifting. Whether you are building a Thanksgiving spread next to our herb butter roasted turkey breast or just want a weeknight vegetable that tastes like a restaurant side, this is the recipe that converts Brussels sprout skeptics.

Fair warning: make a double batch if your guests have teenagers. And if you are planning the whole holiday table, these sit beautifully next to easy make-ahead mashed potatoes and a bowl of garlic butter green beans for a full roasted-veggie spread.

Recipe at a Glance

• Prep time: 15 minutes
• Cook time: 25 minutes
• Total time: 40 minutes
• Servings: 6 as a side dish
• Oven: 425°F (220°C)
• Category: Holiday side dishes

Ingredients

• 2 pounds (900 g) fresh Brussels sprouts, trimmed and halved lengthwise
• 6 slices thick-cut bacon
• 1 small red onion, cut into wedges
• 3 tablespoons olive oil
• 1 teaspoon kosher salt
• 1/2 teaspoon freshly ground black pepper
• 3 garlic cloves, minced
• 2 tablespoons balsamic vinegar
• 1 tablespoon balsamic glaze, for drizzling (optional but gorgeous)

Directions

1. Heat the oven. Position a rack in the center of the oven and preheat to 425°F (220°C). Grab your largest rimmed sheet pan; everything needs room to breathe.
2. Prep the sprouts. Rinse the Brussels sprouts and pat them completely dry. Trim off the woody stem ends, peel away any sad or yellowed outer leaves, and cut each sprout in half lengthwise. Cut the red onion into thin wedges.
3. Season and arrange. Toss the halved sprouts and onion wedges right on the sheet pan with the olive oil, salt, and pepper until every piece is lightly coated. Then arrange the sprouts cut-side down in a single layer, leaving a little space between them.
4. Add the bacon. Lay the bacon strips flat over and around the sprouts, not overlapping. As the bacon renders in the hot oven, it bastes everything in smoky, savory fat.
5. Roast. Slide the pan into the oven and roast for 20 minutes, until the bacon is starting to crisp and the sprouts are browning underneath.
6. Flip and finish. Pull the pan out. Flip the sprouts cut-side up with a spatula, crumble the now-crisp bacon over the top, and scatter the minced garlic over everything. Toss gently and roast 5 to 8 minutes more, until the sprouts are deeply golden with charred crispy edges and a knife slides easily into the thickest one.
7. Finish and serve. Drizzle the balsamic vinegar over the hot pan and toss to coat. Transfer to a warm serving dish, add a light zigzag of balsamic glaze if you like, and serve immediately.

Why This Works

Three pieces of kitchen science make this recipe sing, and they are all about heat management. First, the oven runs hot at 425°F. At that temperature, the natural sugars in the sprouts caramelize instead of steaming, and surface moisture evaporates fast enough that the outer leaves turn crackly instead of soggy. Roasting guides like this breakdown from Tasting Table land on the same 400 to 425°F sweet spot.

Second, the sprouts go cut-side down. That flat cut surface gets full, direct contact with the hot sheet pan, which sears it into a deep golden crust, the Maillard reaction doing its delicious work. Halving also exposes the sprouts’ dense inner leaves, so they cook quicker and more evenly than whole sprouts, which can burn outside before the center turns tender.

Third, the bacon roasts right alongside instead of in a separate skillet. As it renders, the fat coats the sprouts and carries smoky flavor into every caramelized crevice. The garlic waits until the final stretch because minced garlic burns fast at 425°F; adding it late keeps it sweet and golden instead of bitter. The balsamic goes on after roasting for the same reason: its sugars would scorch in the oven, but tossed over the hot pan at the end, it turns into a glossy, tangy finish.

Pro Tips

• Dry them like you mean it. Water is the enemy of crisp. After rinsing, pat the sprouts thoroughly dry with a clean towel before they touch the oil.
• Give them space. Crowded sprouts steam; spaced-out sprouts roast. If 2 pounds will not fit in one layer, split between two pans rather than piling up.
• Match the sizes. Pick sprouts that are roughly the same size so they finish at the same time. If a few are giants, quarter them.
• Save the loose leaves. Those stray outer leaves that fall off while trimming? Toss them on the pan too. They turn into the best crispy chips in the whole batch.
• Use thick-cut bacon. Thin bacon can overcook before the sprouts finish; thick-cut stays meaty and crisps at the same pace as the roast.
• Serve hot. Roasted sprouts lose their crackle as they sit. Have your serving dish ready and bring them straight from the oven to the table.

Common Mistakes (and How to Fix Them)

Mistake: Soggy, steamy sprouts. This is the number one Brussels sprout tragedy, and it is almost always caused by overcrowding the pan. The sprouts release moisture as they cook, and if they are packed tight, that moisture has nowhere to go, so they steam instead of roast. Fix it by spreading them in a single layer with real space between pieces, and do not be shy about grabbing a second sheet pan.

Mistake: Burnt, bitter garlic. Minced garlic goes from golden to acrid in about two minutes at 425°F. Fix it by adding the garlic only for the last 5 to 8 minutes of roasting, never at the start.

Mistake: Flabby, under-rendered bacon. Bacon laid in overlapping piles will not crisp; it will stew in its own fat. Fix it by laying the strips flat with no overlap, and give them the full roast time. The bacon is done when it is deeply browned and crisp to the touch.

Mistake: Balsamic added too early. Balsamic vinegar is full of sugars that scorch under high heat, turning bitter and black. Fix it by drizzling it over the pan after roasting, when the residual heat is enough to warm it into a glaze without burning.

Mistake: Pulling them too early. Pale, just-tender sprouts taste cabbagey and sulfurous. Fix it by roasting until you see real color: deeply golden cut sides, dark charred edges, crispy outer leaves. That char is flavor.

Substitutions

• No bacon? Use 4 tablespoons of olive oil total and add 1/2 teaspoon of smoked paprika for that smoky depth. Pancetta is a fine swap, and turkey bacon works too, though it renders less fat, so add an extra tablespoon of oil.
• No balsamic vinegar? Apple cider vinegar plus 1 teaspoon of maple syrup or honey gives a similar sweet-tangy finish.
• No red onion? Shallots or a yellow onion work just as well; they caramelize beautifully alongside the sprouts.
• No fresh garlic? Toss 1 teaspoon of garlic powder in with the oil and salt instead of adding fresh garlic late.
• Olive oil swap: Avocado oil handles the 425°F heat just as well if that is what you have on hand.

Storage & Make-Ahead

Make-ahead: Trim and halve the sprouts up to 2 days ahead and store them in a sealed bag or container in the refrigerator. The red onion can be wedged a day ahead too. Always roast fresh; roasted sprouts are at their absolute best straight from the oven.

Leftovers: Cool completely, then refrigerate in an airtight container for 3 to 4 days. To bring back the crisp, reheat on a sheet pan in a 400°F oven for 8 to 10 minutes. The microwave will warm them through but leaves them soft, so save that for desperate times.

Freezing: Not recommended. Thawed roasted sprouts turn mushy and lose every bit of their crispy charm.

Frequently Asked Questions

Why are my roasted Brussels sprouts soggy instead of crispy?

Soggy sprouts are almost always caused by steam, not by the sprouts themselves. The three fixes are: dry the sprouts completely before oiling, spread them in a single layer with space between them, and roast at a full 425°F. Crowding the pan traps moisture and steams the sprouts, so use two pans if one is not enough.

Should I cut Brussels sprouts in half before roasting?

Yes. Halving exposes the dense inner leaves so the sprouts cook quicker and more evenly, and the flat cut side sears directly against the hot pan for a deep golden crust. Whole sprouts tend to char on the outside before the center turns tender.

Can I make roasted Brussels sprouts with bacon ahead of time?

You can prep ahead but should roast fresh. Trim and halve the sprouts up to 2 days ahead and refrigerate them, then roast on the day you serve. Leftover roasted sprouts keep 3 to 4 days in the fridge and re-crisp nicely in a 400°F oven for 8 to 10 minutes.

What temperature is best for roasting Brussels sprouts?

425°F (220°C) is the sweet spot. It is hot enough to caramelize the sprouts’ natural sugars and crisp the outer leaves without burning the bacon. Anything much below 400°F gives you steamed, pale sprouts instead of golden, crispy ones.