Description
This Steak Sandwich with Garlic Aioli is the perfect sandwich — featuring juicy, seared steak slices layered with caramelized onions, melted cheese, and a creamy homemade garlic aioli on a toasted baguette or ciabatta roll. Rich, savory, and completely irresistible!
Ingredients
- 1 lb flank steak or sirloin steak
- 2 tbsp olive oil
- 1 tsp salt
- 1/2 tsp black pepper
- 1/2 tsp smoked paprika
- 1 tbsp butter
- 1 large onion, thinly sliced
- 4 slices provolone or Swiss cheese
- 2 ciabatta rolls or 1 large baguette, halved
- 1 cup arugula or baby spinach (optional)
- For Garlic Aioli:
- 1/2 cup mayonnaise
- 2 cloves garlic, minced
- 1 tsp lemon juice
- 1/4 tsp Dijon mustard
- Salt and pepper to taste
Instructions
- Prepare the garlic aioli: In a small bowl, whisk together mayonnaise, minced garlic, lemon juice, Dijon mustard, salt, and pepper. Chill until ready to use.
- Season steak with salt, pepper, and smoked paprika. Let rest at room temperature for 20 minutes before cooking.
- Heat olive oil in a cast-iron skillet over medium-high heat. Sear steak for 3–4 minutes per side, depending on thickness, until desired doneness (130°F for medium-rare). Remove and let rest for 5–10 minutes before slicing thinly against the grain.
- In the same skillet, melt butter and add sliced onions. Cook over medium heat for 10–12 minutes, stirring occasionally, until caramelized and golden brown.
- Toast ciabatta rolls or baguette halves in the oven or skillet until lightly crisp.
- Spread a generous layer of garlic aioli on both sides of the bread.
- Layer sliced steak, caramelized onions, and cheese. If desired, place sandwiches under the broiler for 1–2 minutes to melt the cheese.
- Top with arugula or spinach, close the sandwich, and slice in half to serve.
Notes
- For extra richness, add sautéed mushrooms or roasted red peppers.
- Use a mixture of butter and olive oil when searing for flavor and even cooking.
- Flank, skirt, or ribeye steak works beautifully for this recipe.
- Serve with fries, chips, or a fresh salad for the perfect meal.
- Prep Time: 15 mins
- Cook Time: 20 mins
- Category: Main Course
- Method: Pan-Seared
- Cuisine: American