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 recipe for a busy weeknight dinner and was amazed at how effortless yet impressive it turned out. Everything cooks together, making it perfect for family meals or entertaining with minimal fuss.
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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), 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 & Preheat:
- 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 saucepan, cover with water, and add salt. Bring to a boil and 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:
- 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 sheet pan.
- Arrange on Pan:
- Mound mashed potatoes on the other side, forming 4 piles. Lay steaks in the remaining space.
- Roast:
- Roast for 12–15 minutes, flipping steaks halfway, until desired doneness (130°F/54°C for medium-rare).
- Broil (Optional):
- If needed, broil for 2 minutes to brown the steaks.
- Finish:
- Remove from oven, let steaks rest 5 minutes. Sprinkle with parsley before serving.
Save My family loves gathering around the table for this meal—it feels special, yet is so easy to put together that I can spend more time with them and less in the kitchen.
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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 
Enjoy your steak and garlic mash hot from the oven, garnished with fresh parsley. Every bite combines classic comfort food with easy weeknight convenience.
Kitchen Guide
- → What cut of steak works best?
Boneless sirloin steaks are ideal for this dish as they cook quickly and stay tender when roasted.
- → Can I substitute the green beans?
Yes, asparagus or broccoli make great alternatives and complement the steak and potatoes well.
- → How do I ensure the potatoes are creamy?
Boil Yukon gold potatoes until fork-tender, then mash with butter, cream, salt, and pepper for smooth creaminess.
- → Is it necessary to flip the steaks during roasting?
Flipping midway helps achieve even cooking and a nice crust on both sides of the steaks.
- → Can this meal be made dairy-free?
Use plant-based butter and milk alternatives to replace dairy without sacrificing flavor.
