Blackened Garlic Butter Steak with Parmesan Cream Sauce and Cheesy Mashed Potatoes

When you’re in the mood for something rich, hearty, and undeniably satisfying, nothing delivers quite like a perfectly cooked steak paired with creamy mashed potatoes. Add a parmesan-infused cream sauce and a kiss of garlicky butter, and you’ve got a dinner that feels indulgent yet effortless. This recipe for Blackened Garlic Butter Steak with Parmesan Cream Sauce and Cheesy Mashed Potatoes is your new go-to when you want a restaurant-quality meal in under an hour—right from your own kitchen.

Why You’ll Love this Recipe:

Flavor, Texture, and Comfort in Every Bite

You’re not just making dinner. You’re creating something that excites the senses and warms the soul. Here’s what makes this recipe a keeper:

• Blackened seasoning that packs just the right amount of smoky heat
• Juicy steak bites seared to perfection and bathed in garlic butter
• Creamy parmesan sauce that brings everything together
• Fluffy mashed potatoes loaded with cheese for the ultimate comfort side
• Easy to prepare in less than 60 minutes
• Ideal for special occasions or turning any weeknight into a celebration

Ingredients:

Steak:

Parmesan Cream Sauce:

Cheesy Mashed Potatoes:

Blackened Seasoning:

Step-by-Step Guide:

1. Prep Your Main Ingredients

1. Cut steak into 2–3-inch pieces.
2. Rub generously with avocado oil.
3. Coat with the homemade blackened seasoning.
4. Let the meat rest for 10–15 minutes at room temp.

Meanwhile:

1. Soak peeled, quartered potatoes in cold water for 10 minutes to draw out starch.
2. Drain and set them up for boiling.

2. Cook the Potatoes

1. Boil potatoes in salted water until fork-tender (about 15 minutes).
2. Drain thoroughly.

3. Sear the Steak

1. Heat 2–3 tbsp avocado oil in a large skillet over medium-high heat.
2. Sear steak pieces undisturbed for 2 minutes.
3. Flip and cook another minute. Reduce heat and cook 1 more minute.
4. Remove steak from pan.

In the same skillet:

1. Melt 3 tbsp butter and add 1 tbsp minced garlic.
2. Toss in steak to coat with garlic butter.
3. Let it sizzle for a final 1 minute.
4. Set steak aside under foil to keep warm.

4. Make the Parmesan Cream Sauce

1. Add remaining 2 tbsp butter and garlic to the pan.
2. Cook until garlic is fragrant.
3. Slowly pour in heavy cream, whisking constantly.
4. Simmer and let reduce for 3–5 minutes.
5. Add red pepper flakes, green onions, and parmesan cheese.
6. Stir until sauce thickens.

5. Mash the Potatoes

1. Add melted butter and warmed half and half to the drained potatoes.
2. Mash until creamy.
3. Mix in shredded cheese, garlic powder, salt, and pepper.
4. Adjust texture with more half and half if needed.

6. Plate and Serve

1. Spoon mashed potatoes onto a plate.
2. Top with steak bites.
3. Drizzle with parmesan cream sauce.
4. Optional: garnish with green onions or parsley.

Pro Tips for Success:

• Let steak rest before cooking to lock in juices.
• Use a hot skillet to get a perfect sear without overcooking.
• Don’t skip the garlic butter step – it’s where a lot of the flavor lives.
• Mash potatoes while hot for the fluffiest texture.
• Warm dairy before adding to potatoes to avoid a gluey texture.

Customize It Your Way:

Make It Yours With Simple Swaps

• Try different cuts of steak like NY strip or flank.
• Make it low carb by subbing mashed cauliflower.
• Add greens like steamed broccoli or sautéed spinach.
• Switch the cheese in mashed potatoes for cheddar or gouda.

Frequently Asked Questions:

Can I prepare parts of this ahead of time? Yes. The potatoes and seasoning blend can be made in advance. Just reheat with care.

What’s the best steak cut for this recipe? Ribeye offers more flavor. Sirloin is leaner. Both work great.

Is this recipe spicy? It has a kick, but it’s adjustable. Reduce cayenne and red pepper flakes to mellow it out.

Can I make this without dairy? Yes. Use dairy-free butter and cream substitutes. Flavor may vary.

Is this recipe gluten-free? It is! Just double-check that your packaged items (like cheese) are certified gluten-free.

Wrap-Up: Why This Recipe Belongs on Your Table:

You’re not just cooking steak and potatoes—you’re crafting a moment. Something rich, warm, and memorable. Whether you’re impressing guests or treating yourself to a cozy night in, this Blackened Garlic Butter Steak with Parmesan Cream Sauce and Cheesy Mashed Potatoes hits every mark: bold flavor, creamy comfort, and satisfying indulgence. Once you make it, you’ll crave it again and again.

More Recipe Suggestions:

Blackened Salmon and Broccoli Alfredo

Hot Honey Blackened Shrimp Caesar Salad

Roasted Blackened Cauliflower and Veggie Salad

Browned Butter Mashed Potatoes with Garlic and Parmesan

Blackened Garlic Butter Steak with Parmesan Cream Sauce and Cheesy Mashed Potatoes

When you’re in the mood for something rich, hearty, and undeniably satisfying, nothing delivers quite like a perfectly cooked steak paired with creamy mashed potatoes. Add a parmesan-infused cream sauce and a kiss of garlicky butter, and you’ve got a dinner that feels indulgent yet effortless. This recipe for Blackened Garlic Butter Steak with Parmesan Cream Sauce and Cheesy Mashed Potatoes is your new go-to when you want a restaurant-quality meal in under an hour—right from your own kitchen. 

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Prep Time 20 minutes mins

Cook Time 35 minutes mins

Total Time 55 minutes mins

Course Main Course

Cuisine American

Servings 6 Servings

Equipment

• Measuring cups and spoons
• Mixing Bowls w/lids
• Garlic Mincer
• Herb Scissors/Chopper
• Grater/Micro plane Set
• Large Skillet
• Pasta Pot (for potatoes)

Ingredients

  

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For the Steak:

• 2 lbs steak filet ribeye, or sirloin
• 4 –5 tablespoons avocado oil

For the Parmesan Cream Sauce:

• 5 tablespoons butter divided
• 10 cloves garlic minced (divided use)
• 1.5 cups heavy cream
• 2 green onions diced (green and white parts)
• 1 teaspoon red pepper flakes adjust to taste
• 2/3 cup grated parmesan cheese

For the Cheesy Mashed Potatoes:

• 4 lbs russet potatoes peeled and quartered
• 1 cup half and half warmed
• 6 tablespoons salted butter melted
• 3/4 cup shredded Monterey Jack cheese or mozzarella, pepper jack, etc.
• 1 teaspoon garlic powder
• 3/4 teaspoon salt
• 1/2 teaspoon black pepper or to taste

For the Homemade Blackened Seasoning:

• 2 tablespoons smoked paprika
• 1 tablespoon cayenne pepper
• 1 tablespoon onion powder
• 2 teaspoons garlic powder
• 1 teaspoon ground black pepper
• 1 teaspoon salt
• 1/2 teaspoon dried thyme
• 1/2 teaspoon dried oregano

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Instructions

 

Prepare the Ingredients:

• Cut steak into 2 to 3-inch pieces. Rub with avocado oil and generously coat with the blackened seasoning mix. Let sit at room temperature for 10–15 minutes.
• Place peeled, quartered potatoes in a bowl of cold water for 10 minutes to remove excess starch. Drain, then boil in salted water until fork tender.

Sear the Steak:

• Heat 2–3 tablespoons of avocado oil in a large skillet over medium-high heat. Sear the steak pieces undisturbed for about 2 minutes until golden. Flip once, cook for another minute, then lower the heat and cook for 1 more minute.
• Remove the steak from the pan and set aside. In the same pan, melt 3 tablespoons of butter with 1 tablespoon of garlic. Sauté until fragrant. Toss the steak in the garlic butter and cook for an additional minute. Remove and keep warm under foil.

Make the Parmesan Cream Sauce:

• Using the same pan, add the remaining 2 tablespoons of butter and minced garlic. Cook until fragrant.
• Slowly whisk in the heavy cream and bring to a simmer. Let reduce for 3–5 minutes.
• Stir in red pepper flakes, diced green onions, and parmesan cheese. Whisk until smooth and thickened. Season to taste.

Prepare the Cheesy Mashed Potatoes:

• Drain the cooked potatoes. Add the melted butter and warm half and half. Mash until smooth.
• Stir in shredded cheese, garlic powder, salt, and pepper. Mix until creamy and fully combined.

Assemble and Serve:

• Plate the mashed potatoes, top with blackened steak, and drizzle generously with the parmesan cream sauce.

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