Steak Sandwiches are an absolute favorite with slow caramelized balsamic onions, goat cheese, tomato, and arugula on toasty grilled bread! They are quick and easy enough for a weeknight dinner, and a great way to stretch a buck eating steak at home!
Steak Night at Home
My little boy is 8 weeks old already. Thinking back over the last year, many of the pregnancy sacrifices include food! Water skiing and trampolines I can live without, but no runny egg yolks, no fancy cheeses, no beer (of course) and no rare steak! Now those are tougher! I skipped steak all together for those 9 months, not a fan of the well done variety. So, these sandwiches were long overdue (as was the baby, 9 days late!).
Steak Sandwiches or Steak Tacos are a great way to make a more affordable steak dinner at home. You can use about half the amount of steak per person than if you were just serving steak as the main course. You can go for the best quality steak, a tenderloin, since one steak is stretching for 2 people. But, a sirloin or really any cut that looks good is fine too. Tell the butcher they are for sandwiches, they are usually pretty helpful!
Instructions
The star of these sandwiches is truly the balsamic onions. Slowly caramelized to give you huge flavor, with that gooey texture to melt right over the steak with the goat cheese. Once you taste these onions, you might start putting them on everything! Start them first, they take the most time, but they are super easy.
In a saute pan or cast iron skillet, let the onions caramelize with the vinegar over low heat for about 30 minutes. Stir them occasionally while you prepare all your other ingredients. The steak can be grilled on an outdoor grill, or you can remove the onions when they are done and cook the steaks in a cast iron skillet. Season your steak well with salt and pepper, and cook about 4 to 5 minutes per side for medium rare. Make sure to let the steak rest for 5 minutes before thinly slicing. Assemble your sandwiches with grilled bread, goat cheese, the melted down, dark colored “goo” that the onions have become, tomato, steak, and arugula. The heat of the onions slightly melts the goat cheese to make it creamy and delicious! These are sure to become a sandwich favorite!
If you’re not a fan of heading out to grill in the winter, a cast iron skillet is great for searing steak or any meats! Learn how to easily clean it here!
More Weeknight Favorite Dinners!
- Easy French Dip Sandwiches
- Skillet Burgers
- Bacon Cauliflower Mac & Cheese
- Italian Subs with Giardiniera
- BLT’s with Pesto Aioli
- Loaded Baked Potatoes

Steak Sandwiches with Balsamic Onions
Ingredients
- 1 T olive oil
- 1 red or yellow onion sliced in half moons
- ¼ c balsamic vinegar
- ¼ t kosher salt
- 6 grinds fresh black pepper
- 8 oz steak, filet/tenderloin or sirloin
- ½ t kosher salt
- 6 grinds fresh black pepper
- 4 T goat cheese
- 1 tomato sliced
- arugula
- French or Italian bread sliced and drizzled with olive oil
Instructions
- The onions take some time but are easy, so just get them started and stir them occasionally. In a saute pan or cast iron skillet over low heat, add the olive oil, onions, vinegar, salt and pepper. Let the onions slowly caramelize for a half hour to an hour, stirring occasionally, add a splash of water if they get too dry. When the onions have melted down into a dark colored "goo" and are totally soft and caramelized, they're done.
- Preheat an outdoor grill, or move the onions to a bowl and use a cast iron skillet. Season the steak with a drizzle of olive oil, salt and pepper. Grill to medium rare, about 4 to 5 minutes per side, or whatever doneness you like. Let the steak rest on a cutting board for 5 minutes and thinly slice.
- Grill the bread. Spread the bread with goat cheese, top with the onions, tomato, sliced steak and arugula. Serve with oven fries, roasted veggies or a salad!
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