Save A hearty, all-in-one meal featuring juicy steak and creamy garlic mashed potatoes, roasted together on a single sheet pan for maximum flavor and minimal cleanup.
I first served this sheet pan dinner on a busy weeknight, amazed by how easy it was to enjoy steak and potatoes without extra pots and pans cluttering up the kitchen.
Ingredients
- Steak: 4 (6 oz / 170 g) boneless sirloin steaks, 2 tbsp olive oil, 1 tsp kosher salt, ½ tsp freshly ground black pepper, 1 tsp smoked paprika, 1 tsp dried thyme
- Garlic Mashed Potatoes: 2 lbs (900 g) Yukon gold potatoes (peeled and cubed), 4 cloves garlic (peeled), ¼ cup (60 ml) heavy cream (or milk for lighter option), 2 tbsp unsalted butter, 1 tsp salt, ½ tsp black pepper
- Vegetables: 1 lb (450 g) green beans (trimmed), 1 tbsp olive oil, ½ tsp salt, ¼ tsp pepper
- Garnish (optional): 2 tbsp chopped fresh parsley
Instructions
- Prep Oven & Pan:
- Preheat oven to 425°F (220°C). Line a large sheet pan with parchment paper or foil.
- Cook Potatoes:
- Place potatoes and garlic in a large saucepan. Cover with water and add a generous pinch of salt. Bring to a boil, then simmer for 12–15 minutes until fork-tender. Drain well.
- Mash Potatoes:
- Return potatoes and garlic to the pot. Add butter, cream, salt, and pepper. Mash until smooth and creamy. Set aside, covered to keep warm.
- Prepare Steaks:
- While potatoes cook, pat steaks dry. Rub both sides with olive oil, salt, pepper, paprika, and thyme. Let rest at room temperature.
- Season Green Beans:
- Toss green beans with olive oil, salt, and pepper. Spread evenly on one side of the prepared sheet pan.
- Arrange on Pan:
- Mound mashed potatoes on the other side of the pan, forming 4 separate piles.
- Add Steaks:
- Lay steaks in the remaining space on the pan.
- Roast:
- Roast for 12–15 minutes, flipping steaks halfway through, until desired doneness (130°F/54°C for medium-rare).
- Finish & Serve:
- If needed, broil for 2 minutes to brown the steaks. Remove from oven. Let steaks rest for 5 minutes. Sprinkle with parsley before serving.
Save This meal always brings everyone together at the table, each person reaching in for their favorite piece of steak and fluffy mash. The shared pan makes dinner feel extra homey and special.
Recipe Variations
Try swapping green beans for asparagus or broccoli for a different twist. You can also top the steak with herb butter or add roasted onions to the pan.
Serving Suggestions
Pair this meal with a robust red wine such as Cabernet Sauvignon or a crisp side salad for added freshness.
Storage & Reheating
Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently in the oven or microwave until warmed through.
Save This hearty meal proves you don't need a restaurant to enjoy steak night. Enjoy every bite with easy cleanup and big flavor!
Recipe FAQ
- → What cut of steak works best for this dish?
Boneless sirloin steaks are ideal for even cooking and tender results when roasting on a sheet pan.
- → How do you achieve creamy mashed potatoes?
Boil Yukon gold potatoes until fork-tender, then mash with butter, cream, salt, and pepper until smooth and creamy.
- → Can the green beans be substituted?
Yes, asparagus or broccoli can replace green beans for a different vegetable option roasted alongside the main components.
- → How is the steak cooked to medium-rare?
Roast the steaks for 12-15 minutes at 425°F, flipping halfway through; an internal temperature of 130°F ensures medium-rare doneness.
- → What are good serving suggestions?
Enhance flavor with herb butter atop the steaks and pair with a robust red wine like Cabernet Sauvignon.
- → Are there allergen considerations?
This dish contains dairy from butter and cream. Plant-based alternatives can be used for dairy-free adaptations.