Flank steak sandwich

 

This flank steak sandwich is one of those meals that feels simple but tastes like something you ordered at a cozy little café. It’s packed with bold, savory flavor, melty cheese, and perfectly toasted ciabatta that soaks up every delicious bite.

The secret is all in the marinade. A blend of olive oil, soy sauce, fresh lime juice, basil, parsley, garlic, and pepper transforms the flank steak into something incredibly tender and flavorful. Letting it marinate for at least 8 hours (and turning it a few times) really allows those flavors to soak deep into the meat, making every slice juicy and rich.

Once the steak is grilled to your desired doneness, the magic really comes together. Toasted ciabatta adds that perfect crisp outside with a soft, chewy center, while sweet grilled onions bring a little caramelized goodness that pairs beautifully with the savory steak. Then comes the cheese — creamy Havarti and slightly sharp provolone melt right into the warm steak, creating the most irresistible layers of flavor. (You can absolutely use just one cheese if that’s what you have on hand, and it will still be amazing.)

Ingredients

Flank steak

1/2 cup olive oil

1/3 cup soy sauce

1/4 cup fresh lime juice

2 tablespoons dried basil

2 tablespoons dried parsley

1 teaspoon pepper

1 teaspoon garlic powder

Ciabatta bread

Grilled onions

Provolone cheese

Havarti cheese

Directions

In a bowl, whisk together the olive oil, soy sauce, lime juice, basil, parsley, pepper, and garlic powder. Pour the marinade over the flank steak and refrigerate for at least 8 hours, turning a few times so the flavor is evenly absorbed.

Grill the flank steak until it reaches your preferred doneness, then let it rest before slicing thinly against the grain.

Toast the ciabatta bread until golden and slightly crisp. Layer the sliced steak onto the bread, top with grilled onions, a slice of provolone, and Havarti cheese. The warmth of the steak will gently melt the cheese into every bite.

Serve warm and enjoy a sandwich that’s hearty, flavorful, and bakery-worthy — the kind of meal that disappears fast once it hits the table.