It’s always a good time for a hearty, flavorful steak sandwich!

Tender and juicy strips of steak are sandwiched between soft garlic butter toasted ciabatta buns and topped with cooked mushrooms and golden onions.

steak sandwich on a plate with onions and arugula

I am so excited to have partnered with Reynolds Wrap® to bring you the perfect grilled steak sandwich recipe.

Grilled Steak Sandwiches!

  • Everything in this recipe is cooked on the grill! Easy prep, cooking, and cleanup! 
  • This steak sandwich recipe makes an impressive looking and delicious bistro-style sandwich that’s a welcome departure from ordinary burgers!
  • Build a BYO bar and set out a variety of condiments and toppings! And for anyone who’s watching their calories, simply omit the bread and make a fancy steak salad with the same ingredients.

Grill Prep Tip! Use Reynolds Wrap® aluminum foil to clean the grill before cooking.

Simply roll some foil into a ball and use barbecue tongs to rub it along the grates. This is an easy way to remove debris without worrying about bristles from a traditional barbecue brush!

Overview of Grilled Steak Sandwich ingredients

What Goes on a Steak Sandwich? 

Steak – Choose beef strip loins or rib eyes with some marbling to them. This keeps the meat juicy and adds flavor! Skirt steak also makes great steak sandwiches. Season generously with steak seasoning or salt and black pepper.

Bread – Pick sturdy varieties of bread like ciabatta bread, thick slices of garlic bread, pretzel buns, or hoagie rolls. They’ll soak up the juices but still hold everything together!

Veggies – Cooked in foil packets, the onions and mushrooms practically cook themselves! White or red onions will work in this recipe. Choose either white, brown or portobello mushrooms (or any combo of them).

Toppings – Robust steak sandwiches call for robust toppings! Top as you’d like with arugula, Dijon mustard, or a mayonnaise based horseradish sauce, a thick tomato slice, or a few jalapenos for a perfect steak sandwich!

Variations – Slice steak across the grain and build each sandwich with desired condiments and toppings. For a Philly-style sandwich, slice the meat uber-thin, pile on the veggies and Provolone, and serve with store-bought au jus.

How to Make a Steak Sandwich

These steaks are made on the grill. Oven steaks also work well to make steak sandwiches.

  1. Prep: Assemble mushroom & onion packets in foil; grill until the onions are tender per the recipe below. We find Reynolds Wrap heavy duty foil to hold up the best without tearing for grilled foil packets
  1. Grill: Grill steaks and veggie foil packets to desired doneness (times and temps below). Grill the garlic buttered bread while the steak rests.
  2. Assemble Sandwiches: Once rested, slice the steak against the grain and assemble the sandwich.

The standard temp is 145°F, below is a guide for levels of doneness. Remove the steaks from the grill a few degrees before they’re done as the temperature will continue to rise as they rest.

  • Rare: 125°F
  • Medium-Rare: 135°F
  • Medium: 145°F
  • Medium Well: 155°F
  • Well: 160°F

Our Fave Summer Sandwiches

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Grilled Steak Sandwich
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Grilled Steak Sandwiches

Juicy steak is grilled, sliced, and served on homemade garlic toast with a side of grilled veggies for the perfect summer meal.
Prep Time 20 minutes
Cook Time 40 minutes
Total Time 1 hour
Servings 4 sandwiches
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Ingredients  

Steaks

  • 2 strip loin steaks or ribeye steaks, 1″ thick
  • 1 tablespoon olive oil
  • salt & pepper to taste or steak seasoning if desired
  • ¼ cup garlic butter divided
  • 4 ciabatta buns or two 6″ slices garlic baguette
  • 6 ounces mushrooms ½" slices
  • 1 onion sliced
  • 2 sprigs thyme
  • 1 sprig fresh rosemary
  • arugula, dijon mustard, horseradish, provolone cheese optional sandwich additions

Instructions 

  • Preheat grill to medium heat.
  • Remove steaks from the fridge and rub with olive oil. Season with salt & pepper or steak seasoning to taste. Set aside on the counter.
  • Tear off a 16” sheet of heavy duty foil and spray with cooking spray.
  • Place onions, mushrooms, 2 tablespoons garlic butter, and herbs in the center of the foil sheet. Season with salt and pepper.
  • Bring up the long sides of the foil, so the ends meet and double-fold the ends. Double fold the two short ends to seal the packet.
  • Place packet on the preheated grill and grill 10-15 minutes on one side. Flip package over and grill an additional 15 minutes or until onion is tender.
  • Add the steaks to the grill (after the initial 15 minutes of cooking the foil packets) and cook 5-6 minutes. Flip steaks and cook an additional 6-8 minutes or until it reaches 140°F or desired doneness. (*see notes).
  • Remove steak from the grill and place on a plate. Loosely tent with Reynolds Wrap and let rest 5-7 minutes before slicing.
  • While steak is resting, butter the ciabatta rolls with garlic butter. Place butter side down on the grill and grill 3-4 minutes or until lightly browned.
  • Slice steak across the grain into ½" slices.
  • Spread each toasted roll with dijon mustard (if using) and a small handful of arugula. Add sliced steak, mushrooms and onions (and spoon any butter in the packet over the steaks). Serve immediately.

Notes

To safely clean grill before use, roll a ball of foil and use tongs to scrape the grates of a heated grill.
When sealing the foil packet, be sure to leave a little bit of room for heat to circulate inside.
Bring steaks to room temperature before grilling.
For best results, use an instant-read thermometer to ensure the steaks do not overcook. I remove the steaks from the grill a couple of degrees before it reaches the desired temperature. It will continue to cook while it rests.
The FDA recommends a minimum temperature of 145°F with a 3-minute rest.
Rare: 125°F
Medium-Rare: 135°F
Medium: 145°F
Medium Well: 155°F
Well: 160°F
5 from 9 votes

Nutrition Information

Serving: 1sandwich | Calories: 517 | Carbohydrates: 30g | Protein: 29g | Fat: 32g | Saturated Fat: 15g | Cholesterol: 99mg | Sodium: 438mg | Potassium: 478mg | Fiber: 2g | Sugar: 2g | Vitamin A: 395IU | Vitamin C: 4mg | Calcium: 18mg | Iron: 2mg

Nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.

Course Beef, Lunch, Main Course
Cuisine American
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About the author

Holly Nilsson is the creator of Spend With Pennies, where she creates easy, comforting recipes made for real life. With a passion for nostalgic flavors and simplified techniques, Holly helps busy home cooks create delicious meals that always work. She is also the author of “Everyday Comfort,” which promises to inspire even more hearty, home-cooked meals.
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