Sheet-Pan Balsamic Chicken & Vegetables
One-pan balsamic chicken with roasted broccoli, peppers, and onion, a fast, low-carb, high-protein dinner that keeps blood sugar flat and dishes to a minimum.
Why You'll Love This Recipe
Cubed chicken, broccoli, peppers, and red onion, all tossed with balsamic and sent into a hot oven on one pan. Twenty-five minutes, one thing to wash. What makes it work rather than merely quick is that everything is cut to about the same size, so the chicken finishes as the vegetables do instead of drying out while it waits for the broccoli to catch up. The balsamic reduces to a sticky glaze on the pan and coats everything on the way out.
Balsamic has enough sugar in it to catch at high heat, which is both the point and the risk. Toss once partway through so the glaze that has pooled underneath gets back onto everything, and start watching at eighteen minutes rather than twenty-five. You are waiting for the onion edges and the chicken corners to go dark and sticky, and you want the pan out of the oven the moment they do. A minute past that and the sugar goes past caramel into bitter, and there is no rescuing it.
Chicken breast keeps this simple and the tray of vegetables gives it the bulk, which is a straightforward way to get a proper dinner onto a weeknight table. Cut into cubes it also cooks in the time the vegetables need, which is the reason this works on one pan at all, since a whole breast would still be raw when the broccoli was finished. Scrape the sticky glaze off the pan and onto the plates rather than leaving it behind, because that is where most of the flavor ends up. For the same dinner with butternut in place of the peppers, there is our Baked Chicken With Butternut Squash.
Ingredients
- 1 1/2 lb boneless skinless chicken breast, cubed
- 3 cups broccoli florets
- 2 red bell peppers, chopped
- 1 small red onion, chopped
- 3 tbsp olive oil
- 2 tbsp balsamic vinegar (may contain sulfites)
- 3 cloves garlic, minced
- 1 tsp Italian seasoning
- 1/2 tsp fine sea salt
- black pepper
Instructions
- Heat the oven, and heat the pan with it: Heat the oven to 425°F (220°C) and slide the empty sheet pan in while it comes up. A hot pan starts browning the chicken the moment it lands rather than letting it sit and steam, and that head start is most of the difference between caramelized edges and pale cubes.
- Cut everything to the same size: Cut the chicken into cubes of about an inch, the broccoli into florets no bigger than that, and the peppers and onion into pieces to match. This is the step the whole recipe rests on: at one size everything finishes together, and at mixed sizes the chicken is dry by the time the broccoli stems are tender.
- Toss everything in one bowl: Toss the cubed chicken, broccoli florets, chopped red bell peppers, and red onion with the olive oil, balsamic vinegar, garlic, Italian seasoning, sea salt, and a few grinds of black pepper. Do it in a bowl rather than on the pan so every piece is actually coated; the oil is what carries the seasoning and stops the balsamic from scorching on its own.
- Roast, and watch the edges: Spread everything on the hot pan in a single layer with space between the pieces and roast 20 to 25 minutes, tossing once at the halfway mark. Balsamic has enough sugar in it to catch quickly, so start looking at 18: you want the edges of the onion and the chicken dark and sticky, and you want to pull the pan the minute you get there, because a minute past it the glaze turns bitter.
- Check the chicken and rest it: Cut into the largest cube before you take the pan to the table: it should be white through with no glassy pink at the center, and the juices should run clear. Let the pan sit two minutes so the chicken reabsorbs its juices instead of leaving them on the board.
Variations
- Add more vegetables: zucchini, mushrooms, and asparagus all work. Add the quick ones partway through so they are not limp by the time the chicken is done.
- Make it spicy: add red pepper flakes to the toss along with the Italian seasoning so the heat roasts in with everything else.
- Use thighs instead: cubed boneless thighs are more forgiving on a hot sheet pan and stay juicy even if the vegetables need a few extra minutes.
- Finish with cheese: a scattering of crumbled feta or shaved parmesan as the pan comes out of the oven plays well against the balsamic. Feta and parmesan both add sodium, so pull back on any added salt.
- Serve it over something: the pan juices are worth catching, so spoon it over orzo, farro, quinoa or a split baked sweet potato. Any of them adds starch, so this version is no longer low-carb.
Storage & Leftovers
This keeps four days in the refrigerator and is one of the better cold lunches in the collection: the balsamic goes on soaking into the chicken overnight, so day two tastes more of it than day one. The peppers soften and the broccoli loses its bite, which is worth knowing before you decide whether to make a double batch.
If you want it hot, use a skillet over medium-high for three or four minutes rather than the microwave. Cubed chicken breast goes from warm to rubbery very quickly in a microwave, while a hot pan gives the balsamic edges a chance to catch again and puts back some of what the refrigerator took out.
Do not bother freezing this one. Roasted peppers and broccoli come out of the freezer waterlogged, and the glaze that made the dish is the first thing lost. If you want food in the freezer, cook the chicken plain and freeze that, then roast the vegetables fresh on the day, which takes twenty minutes anyway.
Notes & Tips
- Cut the chicken evenly: cubes about the same size finish together, and a stray large piece is the one that will still be pink when everything else is done.
- Watch the balsamic: it has enough sugar in it to darken fast, so if your oven runs hot, hold half of it back and toss it on for the last few minutes instead.
- Give the pan room: a single layer with space between the pieces is what browns them, and a crowded pan steams everything into something softer.
- Toss once, not constantly: one turn partway through evens out the color, while stirring often keeps anything from developing a crust at all.
- Line the pan: parchment saves you from scrubbing the caramelized balsamic off the sheet afterward.
- Flexible swap: no onion? You can leave it out, or swap in a little chopped celery or chives.
Nutrition & Mindful Eating
- Chicken, broccoli, peppers and onion roast on the same pan, so they trade flavor while they cook. The chicken juices run into the vegetables, the vegetables sweeten and char, and the garlic and olive oil pull the tray into one dish.
- Cubed chicken breast cooks fast and takes on the browning that only a hot dry oven gives it, and the dense protein in it is what turns a tray of roasted vegetables into dinner.
- Broccoli roasted rather than steamed goes crisp and dark at the floret tips, deeper and a little bitter, and it holds onto its fiber, its vitamin C and the sulfur compounds it is known for.
- Red bell peppers collapse into something sweet and nearly jammy in the oven while still carrying a remarkable amount of vitamin C, and the red onion turns soft and mellow beside them.
- Balsamic vinegar reduces a little in the heat, going syrupy and faintly sweet across the pan, and that tang is what keeps a tray of roasted vegetables from tasting flat by the end of the plate.
- As you eat, taste the char on the broccoli tips and the sweetness the peppers gave up in the oven, and put your fork down between bites long enough to check in with your hunger.
Frequently Asked Questions
Is this good for blood sugar?
Yes, it's protein and non-starchy vegetables with very little carbohydrate, so it has a minimal effect on blood sugar.
Can I use chicken thighs?
Yes, boneless thighs stay juicy; roast them a few minutes longer.
How long does it keep?
Four days in the refrigerator. Reheat it in a skillet rather than a microwave so the chicken does not tighten and the balsamic gets a chance to catch on the pan again.
Can I make it ahead?
Yes, with one adjustment. Roast the vegetables a couple of minutes short of where you would normally pull them, because they carry on softening in the container and in the reheat, and they will land right rather than limp on Wednesday.