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 made this sheet pan steak dinner on a busy weeknight, and the whole family was amazed at how flavorful and satisfying it was. The mashed potatoes soak up the steak juices, making every forkful extra delicious!
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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
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Instructions
- Prep Oven and Sheet Pan:
- Preheat oven to 425°F (220°C). Line a large sheet pan with parchment paper or foil.
- Cook Potatoes and Garlic:
- 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 Steak:
- 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 Sheet Pan:
- Mound mashed potatoes on the other side of the pan, forming 4 separate piles.
- Add Steaks to Pan:
- 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).
- Broil and Rest:
- 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 Gathered around the table, everyone was reaching for seconds, and we shared laughs over how easy cleanup would be. Dinners like this make weeknights special for our family.
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Required Tools
Large sheet pan, saucepan, potato masher, knife and cutting board, tongs
Allergen Information
Contains: Dairy (butter, cream). For dairy-free, substitute with plant-based butter and milk alternatives. Always check labels for hidden allergens.
Nutritional Information (per serving)
Calories: 560, Total Fat: 28 g, Carbohydrates: 36 g, Protein: 39 g
Save 
Try this steak & garlic mash sheet pan meal once, and you'll want it in your regular dinner rotation. Cleanup is a breeze, and every plate gets scraped clean!
