Juicy, pan-seared steak topped with homemade cowboy butter and served with golden crispy smashed potatoes. This easy steak dinner combines garlic, fresh herbs, Dijon mustard, lemon, and a touch of red pepper for a rich, savory sauce that melts right over the hot steak.
It looks like a special steakhouse dinner, but the recipe is surprisingly simple to make at home.
Why You’ll Love This Recipe
- Steakhouse-style dinner at home
- Easy ingredients and straightforward preparation
- Rich, garlicky homemade cowboy butter
- Crispy potatoes that soak up the extra butter
- Perfect for a weeknight dinner or date night
- Ready in about 45 minutes
- Easy to adjust from mild to spicy
Recipe Information
Prep Time: 15 minutes
Cook Time: 30 minutes
Total Time: 45 minutes
Servings: 4
Course: Dinner, Main Course
Cuisine: American
Ingredients
For the Steak
- 2 ribeye or New York strip steaks, about 1 to 1¼ inches thick
- 1 tablespoon olive oil
- 1 teaspoon kosher salt
- ¾ teaspoon freshly cracked black pepper
- ½ teaspoon garlic powder
- 1 tablespoon unsalted butter
For the Cowboy Butter
- 6 tablespoons unsalted butter, softened
- 3 garlic cloves, finely minced
- 1 tablespoon Dijon mustard
- 1 tablespoon fresh lemon juice
- 1 teaspoon lemon zest
- 2 tablespoons finely chopped fresh parsley
- 1 tablespoon finely chopped fresh chives
- ½ teaspoon smoked paprika
- ¼ teaspoon red pepper flakes, or more to taste
- ¼ teaspoon freshly cracked black pepper
- Pinch of salt
For the Crispy Smashed Potatoes
- 1½ lb baby potatoes
- 2 tablespoons olive oil
- ½ teaspoon garlic powder
- ½ teaspoon salt
- ¼ teaspoon black pepper
- 1 tablespoon chopped fresh parsley
Instructions
1. Prepare the potatoes
Preheat the oven to 425°F (220°C).
Place the baby potatoes in a large pot and cover them with cold salted water.
Bring to a boil and cook for approximately 15–18 minutes, or until the potatoes are fork-tender.
Drain thoroughly and allow them to sit for about 5 minutes so excess moisture can evaporate.
2. Smash the potatoes
Transfer the potatoes to a parchment-lined baking sheet.
Using the bottom of a glass or measuring cup, gently press each potato until flattened to about ½ inch thick.
Don’t worry if some break around the edges. Those irregular edges become especially crispy in the oven.
Drizzle with olive oil and season with garlic powder, salt, and black pepper.
3. Roast until crispy
Roast for approximately 20–25 minutes, or until deeply golden and crispy around the edges.
For extra browning, broil them for the final 1–2 minutes, watching carefully.
Sprinkle with fresh parsley before serving.
Make the Cowboy Butter
4. Mix the butter
While the potatoes roast, combine the softened butter, garlic, Dijon mustard, lemon juice, lemon zest, parsley, chives, smoked paprika, red pepper flakes, black pepper, and a small pinch of salt.
Mix until combined.
It doesn’t need to be perfectly smooth. Small pieces of garlic and herbs should remain visible.
Taste and adjust the lemon, salt, or red pepper flakes if necessary.
Set aside at room temperature.
Cook the Steak
5. Bring the steak to room temperature
Remove the steaks from the refrigerator about 20–30 minutes before cooking.
Pat them very dry with paper towels.
This step is important for developing a good crust.
Season both sides generously with salt, black pepper, and garlic powder.
6. Heat the skillet
Place a heavy skillet, preferably cast iron, over medium-high to high heat.
Let it become properly hot before adding the steak.
Add the olive oil.
7. Sear the steak
Place the steaks in the hot skillet.
Cook without moving them for approximately 3–4 minutes on the first side.
Flip and cook for another 2–4 minutes, depending on the thickness of the steaks and your preferred doneness.
During the final minute, add 1 tablespoon butter to the skillet and spoon the melted butter over the steaks.
8. Check the temperature
For the most reliable results, use an instant-read thermometer.
Approximate temperatures when removing the steak from the heat:
Rare: 120–125°F
Medium-rare: 125–130°F
Medium: 135–140°F
Medium-well: 145–150°F
The internal temperature will continue to rise slightly while the meat rests.
For a juicy, tender steak, aim for medium-rare to medium.
9. Rest the steak
Transfer the steaks to a cutting board or warm plate.
Immediately spoon a small amount of cowboy butter over each steak.
Let the steaks rest for 5–10 minutes before slicing.
Don’t cover them tightly with foil, as trapped steam can soften the crust.
10. Slice
Slice part or all of the steak against the grain.
For an attractive presentation, leave most of the steak intact and slice one end into several thick pieces.
This shows the interior while keeping the steak as the focal point.
Assemble the Plate
Place the steak on a large plate with the crispy smashed potatoes alongside it.
Spoon a little additional cowboy butter over the hot steak and allow it to melt naturally.
Don’t drown the steak in butter. A small amount is enough—the meat should still be clearly visible.
Finish with freshly cracked black pepper and a little chopped parsley.
Serve immediately.
What Is Cowboy Butter?
Cowboy butter is essentially a highly seasoned compound butter or dipping sauce made with butter, garlic, herbs, mustard, lemon, and spices.
The combination works especially well with beef because the lemon and Dijon cut through the richness of the butter and steak, while garlic and herbs add plenty of savory flavor.
Ingredient Notes
Steak: Ribeye is my first choice because its marbling makes it particularly juicy and flavorful. New York strip is an excellent alternative if you prefer slightly leaner meat.
Butter: Use unsalted butter so you have complete control over the seasoning.
Dijon mustard: It adds acidity and depth without making the sauce taste strongly of mustard.
Fresh garlic: Freshly minced garlic gives cowboy butter much better flavor than garlic powder.
Lemon: Use both juice and zest. The acidity prevents the butter sauce from becoming overly heavy.
Red pepper flakes: They provide gentle heat. Use less for a family-friendly version.
Tips for Perfect Steak
Dry the steak thoroughly. Surface moisture creates steam and prevents proper browning.
Use a hot skillet. The pan should already be hot when the steak goes in.
Don’t constantly flip the steak. Give the first side enough uninterrupted cooking time to develop a crust.
Use a thermometer. It’s far more reliable than judging doneness by time alone.
Let it rest. Cutting immediately allows more juices to escape.
Don’t overload it with cowboy butter. The butter should enhance the steak rather than hide its crust.
Easy Variations
Spicy Cowboy Butter Steak
Increase the red pepper flakes to ½ teaspoon and add a pinch of cayenne pepper.
Cowboy Butter Steak Bites
Cut sirloin into large cubes before cooking. Sear quickly over high heat and toss with a small amount of cowboy butter just before serving.
Cowboy Butter Chicken
Use chicken breasts or boneless chicken thighs instead of steak. Cook chicken to an internal temperature of 165°F (74°C).
Steak Without Potatoes
Serve it with roasted asparagus, green beans, broccoli, a simple green salad, or grilled vegetables.
What to Serve with Cowboy Butter Steak
The crispy smashed potatoes make this a complete and satisfying dinner, but you can add roasted green beans, asparagus or a simple salad if you want something fresh alongside it.
Storage
Store leftover steak and potatoes in separate airtight containers in the refrigerator for up to 3 days.
Store leftover cowboy butter separately in the refrigerator for up to 5 days.
How to Reheat
For the steak, reheat gently in a skillet over low heat just until warmed through. Avoid prolonged reheating because it will continue cooking the center.
Reheat the smashed potatoes in a 400°F (200°C) oven or air fryer until hot and crispy again.
Add fresh cowboy butter after reheating.
Frequently Asked Questions
What cut of steak is best for cowboy butter?
Ribeye is particularly good because its rich beef flavor pairs beautifully with garlic-herb butter. New York strip and sirloin also work well.
Can I make cowboy butter ahead of time?
Yes. Prepare it up to 3 days ahead and refrigerate it in an airtight container. Let it soften slightly before serving.
Can I cook the steak on the grill?
Absolutely. Grill it over high heat to your preferred internal temperature, let it rest, then finish with cowboy butter.
Why isn’t my steak getting a good crust?
The steak or pan may be too wet or the skillet may not be hot enough. Pat the meat thoroughly dry and preheat the skillet before cooking.
Is cowboy butter spicy?
Only slightly with this recipe. You can omit the red pepper flakes for a mild version or increase them for more heat.
Conclusion
This Cowboy Butter Steak with Crispy Smashed Potatoes turns a simple steak dinner into something special without making the recipe complicated. A well-seared steak gets topped with garlicky lemon-herb cowboy butter, while crispy smashed potatoes catch all those extra savory juices.
It’s an easy, satisfying dinner that’s just as suitable for a weeknight as it is for a homemade date-night meal.
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