
This gourmet steak sandwich features juicy seared skirt steak, sweet caramelized onions, melted provolone, and smoky chipotle mayo on a crusty baguette. Each component works together to create the perfect balance of flavors and textures in every bite.
The rich aroma of caramelizing onions and searing beef transforms any kitchen into a gourmet sandwich shop. This recipe consistently impresses guests and has become a trusted favorite for casual entertaining.
Key Ingredients Guide
- Skirt steak: Select marbled cuts, even thickness for best results
- Baguette: Crusty exterior, soft inside is ideal
- Provolone: Deli-sliced for optimal melting
- Red onions: Choose firm, heavy ones
- Chipotle peppers: Test heat before using
- Arugula: Fresh, crisp greens add peppery bite
Step-by-Step Method
- Step 1:
- Prepare the Steak: Rest at room temperature. Dry thoroughly. Season generously. Cook in very hot pan for proper crust. Let rest before cutting.
- Step 2:
- Caramelize Onions: Cut uniform slices. Begin with water method. Lower heat as needed. Monitor color. Add water if too dry.
- Step 3:
- Assemble Sandwich: Toast bread lightly. Add mayo layer. Place steak. Top with onions. Add cheese. Finish with greens.

Temperature Control
Cover steak with foil while preparing other components. This retains heat and helps melt cheese during assembly.
Prep-Ahead Options
Onions can be made 3 days ahead. Mayo mixture keeps 24 hours. Prepare bread and greens early. Cook steak just before serving.
Accompaniments
Serve alongside crispy fries, fresh arugula salad, or house-made potato chips. Consider smaller portions for party service.
Bread Selection
While baguettes are classic, try ciabatta for extra chew, sourdough for tang, or French rolls for individual servings. Garlic-rubbed bread adds aromatic depth.
Mayo Variations
Enhance chipotle mayo with roasted garlic, fresh herbs, prepared horseradish, roasted peppers, or Dijon mustard.
Using Leftovers
Repurpose extra ingredients into omelettes, salads, breakfast sandwiches, pasta dishes, or quesadillas.

Quality ingredients treated with proper technique create memorable meals. This sandwich demonstrates how simple components can produce exceptional results, perfect for both special occasions and casual dining.
Frequently Asked Questions
- → Can I make any of the parts in advance?
- Absolutely! The chipotle mayo and caramelized onions can both be prepped and stored in the fridge for up to 3 days.
- → Why is it important to slice steak against the grain?
- Cutting against the grain shortens the muscle fibers, making the meat tender and easier to chew.
- → Could I swap the skirt steak for a different cut?
- Yes, you can opt for flank steak or ribeye instead—they work just as well.
- → How spicy does the chipotle mayo get?
- At 3 chipotle peppers, it’s moderately spicy. Feel free to use fewer peppers if you'd like to tone the heat down or add more for extra spice.
- → What type of bread works best?
- Crusty options like a baguette or ciabatta roll hold up nicely against the fillings without getting soggy.