Steak and Mashed Potatoes for a Cozy Family Dinner

A seared steak and a pot of garlic mashed potatoes make a dinner for two that looks more involved than it is. The potatoes boil while you season the meat, the steak cooks in a hot skillet in a few minutes per side, and both land on the plate at the same time. The recipe serves 2 and takes 35 minutes (15 of prep and 20 of cooking).

Ingredients

For the Steak

• 2 ribeye or sirloin steaks (about 8 oz each)
• 1 tbsp olive oil
• 1 tsp kosher salt
• ½ tsp freshly ground black pepper
• 1 tsp garlic powder (optional)
• 1 tbsp butter (for finishing)

For the Mashed Potatoes

• 2 lbs Yukon gold or russet potatoes, peeled and cut into chunks
• 4 tbsp unsalted butter
• ½ cup whole milk, warmed
• 2 cloves garlic, minced
• Salt and pepper, to taste
• Optional: 2 tbsp sour cream for extra creaminess

How To Make It

1. Prep the potatoes: Place peeled potato chunks in a large pot and cover with cold water. Add 1 tsp salt. Bring to a boil, then simmer for 15–20 minutes, until potatoes are fork-tender. Drain and return to pot.
2. Mash the potatoes: Add butter, warmed milk, and minced garlic to the potatoes. Mash until smooth and creamy. Season with salt and pepper, and stir in sour cream if using.
3. Season the steak: Pat steaks dry with paper towels. Rub both sides with salt, pepper, and garlic powder.
4. Sear the steak: Heat olive oil in a heavy skillet over medium-high heat. Once hot, add steaks and cook 3–4 minutes per side for medium-rare (adjust time for thickness). Steak should have a deep brown crust.
5. Finish with butter: Remove steaks from pan and top with a pat of butter. Let rest for 5 minutes before slicing.
6. Serve: Plate steaks alongside creamy mashed potatoes for a classic combination.

Timing the Steak and the Potatoes Together

Put the potatoes on first. The 15–20 minute simmer is the longest step, so the steak can be seasoned while they cook. The steak goes into the pan once the potatoes are drained and mashed, and its 5-minute rest under a pat of butter gives you time to plate. Cutting the potatoes into smaller chunks helps them boil faster, and warming the milk keeps the mash from cooling down when you stir it in.

How to Get a Good Crust and Cook the Steak Safely

• Dry the surface. Pat the steaks dry so they brown instead of steaming.
• Use a heavy pan. A cast-iron or heavy skillet holds heat and gives a deeper sear. Wait until the oil is hot before adding the steaks.
• Use a thermometer. Time depends on thickness, and color is not a reliable guide to doneness. USDA guidance for whole cuts of beef is 145°F with a 3-minute rest. The 3–4 minutes per side in this recipe give a medium-rare steak, which finishes below that mark, so cook longer if you want to meet the USDA figure.
• Rest the steak. The 5-minute rest lets the juices settle so they stay in the meat when you slice it.

Steak and Potato Swaps

• Sirloin or strip steak instead of ribeye: a leaner cut that tastes less rich.
• Russet potatoes instead of Yukon gold: fluffier mash that is slightly less buttery. Yukon golds give a naturally buttery texture.
• Roasted garlic instead of raw: a milder flavor in the potatoes.
• Parmesan or cheddar stirred into the mash: extra richness.
• Half the butter swapped for olive oil: a lighter mash, but with less creamy flavor.

What to Serve Alongside

A crisp salad balances the richness. The goat cheese beet salad works well, and so does roasted vegetables. For a one-pan take on this meal, see the steak and potatoes skillet, and for a butter-and-garlic finish, the diamond cut steak with garlic butter sauce. You can also spoon the pan juices over the steak.

Storing, Reheating and Make-Ahead

Mashed potatoes can be made up to a day ahead. Keep them in an airtight container in the fridge and reheat gently with a splash of milk or butter to restore creaminess. Steak is best eaten fresh. If you have leftovers, refrigerate them within 2 hours, eat them within 3–4 days, and reheat until steaming hot (165°F). Mashed potatoes can be frozen: cool them completely, pack them into a freezer-safe container and reheat gently with milk and butter.

FAQ

How do I know when my steak is done?

Use a meat thermometer. USDA recommends 145°F with a 3-minute rest for whole cuts of beef. The recipe as written gives medium-rare, which is lower than that.

What if I do not have Yukon gold potatoes?

Russets work as a substitute. They make fluffier mashed potatoes, though slightly less buttery than Yukon gold.

How can I make this more flavorful?

Season the steak generously and finish it with butter or pan juices. Roasted garlic or herbs such as rosemary add depth to the mashed potatoes.

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