Save Pin Savory flank steak gets seared to perfection and piled onto soft slider buns with a generous slather of homemade cowboy butter. This zesty compound butter combines garlic, fresh herbs, citrus, and spices for an irresistible finish. Ready in just 35 minutes, these handhelds are ideal for game day, parties, or weeknight dinners when you want something special without spending hours in the kitchen.
The first time I made cowboy butter, I stood there mixing it and thought, this is just butter with stuff in it, right? Then I tasted it. My roommate wandered into the kitchen asking what smelled so incredible, and we ended up eating half of it on random crackers before the steak even hit the pan. Now it is the only reason my friends actually request my cooking for game day.
Last summer I made these for a Fourth of July party and watched my usually skeptical uncle take three in a row, nodding between each bite. Someone asked for the recipe and I had to admit the magic was mostly butter and herbs, but they still treat me like I invented something groundbreaking. That is the power of really good compound butter.
Ingredients
- Flank or ribeye steak: I prefer flank because it slices beautifully and stays tender when you cut it thin against the grain
- Olive oil: Helps the seasoning stick and creates a nice sear on the meat
- Unsalted butter: Use unsalted so you can control the salt level in the cowboy butter
- Fresh herbs: Do not skip the fresh parsley, chives, and dill—they make the butter taste bright and alive
- Lemon juice and zest: This little hit of acid cuts through all that rich butter and beef
- Slider buns: Soft brioche or Hawaiian rolls work perfectly here
- Arugula: Adds a peppery freshness that balances the rich toppings
- Red onion: Thin slices give you just enough bite without being overwhelming
Instructions
- Get the steak ready:
- Rub the meat with olive oil, salt, and pepper, then let it sit on the counter for about 15 minutes so it is not ice cold when it hits the pan
- Make the cowboy butter:
- Mash the softened butter with garlic, lemon juice and zest, Dijon, Worcestershire, paprika, cayenne, all those fresh herbs, red pepper flakes, and salt until it looks like a magical, speckled spread
- Sear the steak:
- Heat a grill pan or skillet until it is screaming hot, then cook the steak for 3 to 4 minutes per side for medium-rare, and let it rest for 5 minutes before slicing it thin against the grain
- Toast the buns:
- Brush the cut sides with a little olive oil and toast them in a pan until they are golden and smell irresistible
- Build the sliders:
- Slather both sides of each bun with cowboy butter, then pile on arugula, sliced steak, and red onion before putting on the tops
- Serve them up:
- Get these to the table while they are still warm, because cold cowboy butter is just not the same experience
Save Pin My brother in law still talks about the time I made these for his birthday, mostly because he kept asking what was in the butter and I just kept saying secret ingredients. Eventually I told him, and now he keeps a batch of cowboy butter in his fridge at all times, even when he is just making toast. It is funny how one recipe can change someone is entire kitchen routine.
Make Ahead Magic
The cowboy butter actually gets better after a day or two in the fridge, so I often make it the night before a party and let those flavors really meld together. Just bring it back to room temperature before you need to spread it, or it will tear your buns apart.
Steak Doneness Guide
I use the finger test, but if you are not comfortable with that, a meat thermometer is your best friend. Medium rare is around 130 to 135 degrees, and remember that the steak keeps cooking a bit while it rests, so pull it a little early.
Serving Ideas
These sliders are substantial enough to be the main event, but I like to serve them with some crispy oven fries or a simple green salad dressed with vinaigrette to cut the richness. The cool, acidic salad makes each bite feel balanced instead of overwhelming.
- Set out extra cowboy butter for people to add more
- Have plenty of napkins ready because these get messy
- Consider offering a sharp cheddar for the cheese lovers
Save Pin There is something about watching people bite into these sliders and immediately go quiet for a second before the compliments start pouring in. That is the moment you know you nailed it.
Recipe Questions & Answers
- → What cut of steak works best?
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Flank steak and ribeye are excellent choices for their flavor and texture. Skirt steak or sirloin make great alternatives if you prefer. Slice against the grain for maximum tenderness.
- → Can I make cowboy butter ahead?
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Absolutely! Prepare the compound butter up to 5 days in advance and store it in the refrigerator. Bring it to room temperature before spreading for easy application.
- → How do I know when the steak is done?
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Use a meat thermometer for accuracy—130°F yields medium-rare. If you prefer medium, aim for 140°F. Remember the steak continues cooking slightly while resting.
- → What sides pair well with these sliders?
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Crispy potato wedges, coleslaw, or a simple green salad balance the rich flavors. For drinks, try a bold cabernet or smoky bourbon cocktail to complement the buttery steak.
- → Can I cook the steak on a regular grill?
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Yes! An outdoor grill works beautifully over high heat. Just watch closely since flank steak cooks quickly on direct flames. Rest the meat before slicing for juicier results.
