This easy sheet pan dinner combines tender strips of sirloin with colorful roasted vegetables and a rich balsamic glaze. Everything comes together on one pan, making it a simple, flavorful option for busy weeknights with very little cleanup.
Ingredients
Ingredient
Amount
Sirloin steak, sliced against the grain
1 ½ lbs
Broccoli florets
2 cups
Red bell pepper, sliced
1 large
Yellow bell pepper, sliced
1 large
Red onion, cut into wedges
1 medium
Olive oil
2 tbsp
Salt and black pepper
To taste
Fresh parsley, chopped
Optional
Balsamic Marinade
Ingredient
Amount
Balsamic vinegar
⅓ cup
Olive oil
3 tbsp
Low-sodium soy sauce
2 tbsp
Worcestershire sauce
1 tbsp
Honey
1 tbsp
Dijon mustard
1 tbsp
Garlic, minced
3 cloves
Black pepper
½ tsp
Directions
Heat the oven: Preheat the oven to 425°F (220°C). Line a large rimmed sheet pan with foil and lightly coat it with nonstick spray.
Prepare the marinade: Add the balsamic vinegar, olive oil, soy sauce, Worcestershire sauce, honey, Dijon mustard, garlic, and black pepper to a bowl. Whisk until well combined.
Marinate the steak: Place the sliced sirloin in a shallow dish or zip-top bag. Pour half of the marinade over the steak and toss until evenly coated. Let it marinate for at least 15 minutes.
Prepare the vegetables: Arrange the broccoli, red pepper, yellow pepper, and onion on the prepared sheet pan. Add the remaining marinade and 2 tablespoons of olive oil. Season with salt and pepper, toss well, and spread everything into an even layer.
Roast the vegetables: Bake for 12–15 minutes, until the vegetables begin to soften and develop caramelized edges.
Add the steak: Remove the steak from the marinade and pat the strips dry. Move the vegetables toward the sides of the pan and place the steak in the center.
Finish cooking: Return the pan to the oven and roast for another 8–10 minutes, or until the steak reaches 145°F (63°C) and the vegetables are tender.
Rest and serve: Remove from the oven and let everything rest for about 5 minutes. Garnish with fresh parsley and serve on its own or alongside rice or mashed potatoes.
