If you’re looking for the ultimate steak sandwich, this recipe delivers. Tender, butter-basted New York strip is layered with sweet caramelized onions, melted American cheese, crisp raw onions, and a creamy sriracha mayo, all served on toasted ciabatta for a sandwich that’s packed with bold, savory flavor in every bite.
Prep Time: 15 Minutes | Cook Time: 2 Hours | Serves: 2-4 | See Full Video Below
Ingredients: (I used half of this recipe in my video)
- 2 NY Strip
- 4 Yellow Onions
- 1 White Onion
- 2 Tbsp Olive Oil
- 2 Tbsp Butter
- 2 tsp Sugar
- 1 Tbsp Vegetable Oil
- 4 Tbsp Butter
- 4 Garlic Cloves
- 2 Rosemary Sprigs
- 1 Shallot
- Ciabatta Loaf
- White American Cheese
- 1/2 Cup Mayonnaise
- 1 Tbsp Sriracha
- Salt and Pepper to taste
Directions:
- Start by generously seasoning the steak with kosher salt and a light seasoning with pepper, then set aside
- Peel the onions then slice them all very thin
- In a large pan over medium-high heat, add 2 tbsp of olive oil and butter, then add the yellow onions and immediately salt
- Next add in the sugar and cook for about 20-30 minutes stirring occasionally
- Once the onions start the brown, lower the heat and continue cooking and stirring
- Cook the onions until they are a deep gold brown color then remove from heat and set aside
- Heat a cast iron pan over high heat and add the vegetable oil
- Once the oil begins the smoke, add the strip fat side down and cook for one and a half minutes until golden brown, then sear each side for 2 minutes or until golden brown then remove
- Lower the heat to medium and add the 4 tbsp of butter, crushed garlic cloves, rosemary sprigs and crushed shallot
- Then add the strip and use a spoon to baste the steak for 1-2 minutes
- Immediately remove from heat to rest
- Cut the ciabatta loaf down the middle so you have a top and bottom bun, then cook the bread face down in the cast iron pan for 2-3 minutes
- Mix the mayonnaise and sriracha together and heavily lather each face of bread
- Thinly slice the steak and load it onto the sandwich
- Next place white american cheese on the steak and toast or broil the sandwich for a few minutes to let the cheese melt
- Then add the caramelized onions followed by the raw onions and crown your steak sandwich
- Serve and enjoy! (Optional, garnish with chopped Italian parsley)

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