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Looking down on a tray of Cowboy Steak Sliders on a wooden table.
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5 from 4 votes

Cowboy Butter Steak Sliders

Enjoy the perfect blend of flavors in my Cowboy Steak Sliders. Tender steak, caramelized onions, jalapenos, and cheese in brioche rolls brushed with mouthwatering cowboy butter!
Prep Time10 minutes
Cook Time55 minutes
Resting Time30 minutes
Total Time1 hour 35 minutes
Course: Appetizer, Dinner, Main Course
Keyword: Cowboy Steak Sliders
Servings: 12 sliders
Calories: 374kcal
Author: Amanda Rettke--iamhomesteader.com

Ingredients

  • 2 pounds beef sirloin, trimmed of fat
  • 2 teaspoons kosher salt
  • 2 teaspoons black pepper
  • 3 tablespoons unsalted butter, divided
  • 1 large yellow onion, cut in half, thinly sliced into half-moon shapes
  • 1 medium jalapeño pepper, sliced
  • 1 cup (113 g) sharp cheddar cheese, shredded
  • 1 package (12-count) Brioche slider rolls
  • 1 recipe cowboy butter, melted, divided

Instructions

  • Season steak with salt and pepper. Let it rest on the counter for about 30 minutes before cooking.
  • While the steak is resting, caramelize the onions. In a large non-stick skillet over medium-low heat, melt 2 tablespoons butter. Once melted, add the onions and sauté them for 25-30 minutes, stirring occasionally, until they are very tender and caramelized to a rich golden brown color. Transfer to a plate and set aside.
  • Preheat oven to 350°F. Spray a 9x13-inch baking dish with nonstick cooking spray. Set aside.
  • In the same skillet over medium-high heat, melt the remaining butter. Add steak and cook for 4-5 minutes on each side, or until meat is cooked to your liking.*
  • Carefully tip up the skillet, spooning the butter back over the steak. You can also add more butter to the pan if you want.
  • Set the steak aside to cool slightly, approximately 5 minutes.
  • Slice the steak against the grain as thinly as possible.

Assembly

  • Split your rolls in half horizontally and place the bottom halves into the prepared baking dish.
  • Evenly pour about ¼ cup of the melted cowboy butter over the bottom halves of the rolls in the pan.
  • Top with the steak slices.
  • Evenly place the jalapeños and shredded cheese over the steak.
  • Evenly distribute the caramelized onions over the cheese.
  • Place the top halves of the rolls on top of the onions. Brush the tops of the rolls with about ¼ cup melted cowboy butter.
  • Cover the dish with aluminum foil and bake for 15 minutes, or until the cheese is hot and bubbly.
  • Remove the foil and bake for an additional 3-5 minutes (or until the tops of the sliders turn a golden brown).
  • Remove from oven. Brush the remaining melted cowboy butter over the warm sliders.
  • Slice and serve.

Video

Notes

*When Is Steak Done?
Determining when steak is done cooking is really up to you. A meat thermometer comes in handy to check for doneness. Just because the outside looks amazing doesn’t mean it’s ready to be removed from the oven or grill. Depending on your preference, here are some internal temperatures you can use as a guide when cooking steak:
125°F = Rare–Bright red center; cool to warm to the touch
130-135°F = Medium Rare–Dark pink red color center; warm to the touch
140°F = Medium–Pink center; completely warm to the touch
145°F = Medium-well–Mostly brown center with a tiny bit of pink in the middle
It’s important to remember that steak will continue to cook a little bit after it’s removed from the oven or grill.

Nutrition

Serving: 1slider | Calories: 374kcal