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Preheat your oven to 400°F (200°C). Line a large sheet pan with parchment paper for easier cleanup.

In a large bowl, combine the cut potatoes, red onion wedges, and bell pepper pieces. Drizzle with 2 tablespoons of olive oil, 1 teaspoon of salt, and 1/2 teaspoon of black pepper. Toss well to ensure all vegetables are evenly coated.

Spread the seasoned vegetables in a single layer on the prepared sheet pan. Roast in the preheated oven for 15 minutes.

While the vegetables are roasting, prepare the garlic herb butter. In a small bowl, combine the melted unsalted butter, minced garlic, chopped fresh parsley, chopped fresh thyme, and optional red pepper flakes. Stir until well combined.

After the vegetables have roasted for 15 minutes, remove the sheet pan from the oven. Add the cubed sirloin steak to the sheet pan, distributing it evenly among the vegetables. Drizzle the steak and vegetables with the garlic herb butter.

Return the sheet pan to the oven and continue to roast for another 10-12 minutes, or until the steak reaches your desired doneness and the potatoes are tender and lightly browned. For medium-rare steak, aim for 10 minutes; for medium, aim for 12 minutes.

Carefully remove the sheet pan from the oven. Let the steak and vegetables rest for 5 minutes before serving. This allows the steak juices to redistribute.

Serve hot and enjoy your delicious sheet pan steak and potatoes!


Preheat your oven to 400°F (200°C). Line a large sheet pan with parchment paper for easier cleanup.

In a large bowl, combine the cut potatoes, red onion wedges, and bell pepper pieces. Drizzle with 2 tablespoons of olive oil, 1 teaspoon of salt, and 1/2 teaspoon of black pepper. Toss well to ensure all vegetables are evenly coated.

Spread the seasoned vegetables in a single layer on the prepared sheet pan. Roast in the preheated oven for 15 minutes.

While the vegetables are roasting, prepare the garlic herb butter. In a small bowl, combine the melted unsalted butter, minced garlic, chopped fresh parsley, chopped fresh thyme, and optional red pepper flakes. Stir until well combined.

After the vegetables have roasted for 15 minutes, remove the sheet pan from the oven. Add the cubed sirloin steak to the sheet pan, distributing it evenly among the vegetables. Drizzle the steak and vegetables with the garlic herb butter.

Return the sheet pan to the oven and continue to roast for another 10-12 minutes, or until the steak reaches your desired doneness and the potatoes are tender and lightly browned. For medium-rare steak, aim for 10 minutes; for medium, aim for 12 minutes.

Carefully remove the sheet pan from the oven. Let the steak and vegetables rest for 5 minutes before serving. This allows the steak juices to redistribute.

Serve hot and enjoy your delicious sheet pan steak and potatoes!
