Simple Steak & Creamy Mashed Potatoes Recipe – A Restaurant-Style Dinner in 30 Minutes

If you're searching for a quick steak dinner recipe that pairs perfectly with creamy mashed potatoes, you’ve come to the right place. This simple steak & mashed potatoes recipe delivers restaurant-quality flavors in under 30 minutes. By using Idahoan mashed potatoes, you get a velvety side dish that complements a perfectly seared steak every time.

Why This Steak & Mashed Potatoes Recipe Works

• It’s quick and easy: Get dinner on the table fast with a streamlined process that’s perfect for weeknights.

• Restaurant-Quality: Enjoy a juicy, butter-basted steak paired with rich, creamy mashed potatoes.

• High-Impact Flavor: A simple pan sauce made with beef broth and Worcestershire sauce adds depth and sophistication.

• Versatile and Customizable: Adapt the seasoning and sauce to make this recipe your own.

Best Steak Cuts for This Recipe

Choosing the right cut of steak can make all the difference when preparing a restaurant-quality meal at home. Here are the best options for a juicy, flavorful steak that pairs perfectly with creamy mashed potatoes:

1. Ribeye (Most Flavorful & Juicy)

• Why Choose It? Ribeye is known for its rich marbling, which means more fat for a juicy, flavorful bite.

• Best Cooking Method: Pan-searing with butter basting enhances its natural flavors. Cook to medium-rare or medium for the best texture.

2. New York Strip (Balanced & Tender)

• Why Choose It? A leaner cut with just enough marbling to keep it tender and flavorful. It’s a great middle-ground option.

• Best Cooking Method: Pan-seared or grilled for a nice crust and medium-rare doneness.

3. Filet Mignon (Most Tender & Elegant)

• Why Choose It? If you love a melt-in-your-mouth steak, filet mignon is the way to go. It’s lean but exceptionally tender.

• Best Cooking Method: Pan-seared with butter for extra flavor since it has less fat than other cuts.

4. Sirloin (Affordable & Leaner Option)

• Why Choose It? A budget-friendly option that still delivers great flavor when cooked properly.

• Best Cooking Method: Cooked to medium or medium-rare for tenderness, as it can be slightly firmer than ribeye or filet.

5. Skirt or Flank Steak (For a Budget-Friendly Twist)

• Why Choose It? These cuts are thinner and packed with bold flavor, but they must be sliced against the grain for tenderness.

• Best Cooking Method: Cooked quickly at high heat and served medium-rare.

Pro Tip: No matter which cut you choose, let the steak rest for at least 5-10 minutes before slicing to keep it juicy!

Print

Simple Steak & Creamy Mashed Potatoes Recipe – A Restaurant-Style Dinner in 30 Minutes

Yield 2-4

Author Kim Alexander

Prep time

10 Min

Cook time

17 Min

Total time

27 Min

Cook modePrevent screen from turning off

Ingredients

For the Steak:

• 1-2 cuts of ribeye, NY strip, or filet mignon (choose your favorite cut)
• 1 tsp salt
• ½ tsp black pepper
• ½ tsp garlic powder (optional)
• 1 tbsp olive oil
• 2 tbsp butter
• 2 cloves garlic, smashed
• 2 sprigs fresh thyme or rosemary (optional)

For the Creamy Mashed Potatoes:

• 1 pouch Idahoan Mashed Potatoes (prepared as per package instructions)
• 2 tbsp butter
• ¼ cup heavy cream or milk
• 1 clove garlic, minced
• Salt & pepper, to taste

For the Pan Sauce (Optional but Recommended):

• ¼ cup beef broth
• 1 tbsp butter
• 1 tsp Worcestershire sauce

Instructions

Prepare and Cook the Steak

1. Pat the steak dry with a paper towel. Season generously on both sides with salt, pepper, and garlic powder for an easy steak recipe that delivers flavor in every bite.
2. Heat olive oil in a cast-iron pan over medium-high heat. Once the pan is hot, add the steak and sear for 3-4 minutes per side for a medium-rare finish (adjust according to your steak’s thickness).
3. During the last minute of cooking, add butter, smashed garlic, and thyme or rosemary. Tilt the pan and spoon the melted butter over the steak to lock in moisture and flavor.
4. Remove the steak from the pan and let it rest for 5-10 minutes. Resting allows the juices to redistribute, ensuring every slice is tender and juicy.

Make the Creamy Mashed Potatoes

1. Follow the package instructions to prepare your Idahoan mashed potatoes.
2. Stir in butter, minced garlic, and heavy cream (or milk) until smooth. Season with salt and pepper to taste. These creamy mashed potatoes add the perfect comfort element to your meal.

Make the sauce:

1. In the same pan used for the steak, add beef broth and Worcestershire sauce. Scrape up all the flavorful browned bits from the bottom of the pan.
2. Let the mixture simmer for 1-2 minutes, then whisk in the butter until the sauce is glossy and rich.
3. Cut the steak against the grain for maximum tenderness.
4. Serve the steak slices next to a generous scoop of the creamy mashed potatoes. Drizzle the pan sauce over both for an extra burst of flavor.
5. Your steak and mashed potatoes dinner is ready to be enjoyed!

Nutrition Facts

Calories

720

Fat

45 g

Sat. Fat

20 g

Carbs

50 g

Fiber

5 g

Net carbs

44 g

Sugar

4 g

Protein

45 g

Sodium

600 mg

Cholesterol

150 mg

Similar Recipes

The Most Flavorful Orange-Glazed Salmon Recipe You’ll Ever Try!

Perfect Pan-Seared Lamb Rib Chops with Garlic Herb Butter

The Ultimate Surf and Turf with Garlic Herb Butter, Mashed Potatoes & Roasted Asparagus

Did you make this recipe?

Tag @kimalexandermua on instagram and hashtag it #homecookblog