The Ultimate Steak Sandwich
The ultimate comfort food, The Ultimate Steak Sandwich is a delightful combination of juicy steak, savory mushrooms, and creamy horseradish mayo. Perfect for a quick weeknight dinner or a special occasion, this sandwich is easy to make and sure to impress. Treat yourself tonight!
Equipment
- Skillet
- Frying Pan
- Whisk
- Chef's Knife
- Mixing Bowl
Ingredients
- 4 rolls ciabatta rolls about 6-inches in length, split in half lengthwise to open
- 2 steaks pan-seared steaks sliced, about 12-ounces each, 1 to 1.5 inches thick
- 8 ounces sliced cremini mushrooms
- 1 tablespoon unsalted butter
- ½ cup caramelized onions
- ½ cup baby arugula
- kosher salt and freshly-ground black pepper
- ½ cup mayonnaise
- 1 tablespoon sour cream
- 1 clove garlic minced
- 1-2 tablespoons refrigerated prepared horseradish drained
- kosher salt and freshly-ground black pepper
Instructions
- Follow the instructions in my Pan Seared Steak tutorial to cook the steaks to your desired doneness.
- Make the caramelized onions (recipe link in the ingredients list) and sautéed mushrooms - I typically make these while the horseradish mayo (below) is resting.
- For the mushrooms, heat the butter in a nonstick skillet over medium-high heat, until foaming subsides. Add the mushrooms, along with a pinch of kosher salt and pepper. Sauté until the liquid is released and evaporated and the mushrooms are beginning to brown around the edges. Remove from the pan and set aside.
- In a bowl, whisk together mayonnaise, sour cream, garlic, horseradish, and a pinch or two of salt and pepper. Cover and refrigerate for at least 30 minutes for the flavors to meld. You will not taste the full flavor of the horseradish when you first mix the mayo.
- After 30 minutes, taste the mayo and add additional horseradish to your preferences. Keep chilled until ready to assemble the sandwiches.
- Spread a little bit of the mayo on the bottom of each ciabatta roll. Layer each with a few baby arugula leaves, 1/4 of the sliced steak, sautéed mushrooms, and caramelized onions. If desired, spread a little extra horseradish mayo on the top half of the roll.
- Sandwiches are best served immediately, while the steak is still warm.
Notes
- Storage: Store any leftover sandwiches in an airtight container in the fridge for up to two days. Reheat the components separately for best results.
- Freezing: You can freeze the cooked steak and mushrooms separately for later use. Assemble the sandwich fresh when you're ready to enjoy.
- Pairing: Serve the The Ultimate Steak Sandwich with sweet potato fries or a light salad for a complete meal.
- Variations: Feel free to add your favorite cheese or other veggies such as peppers to customize your sandwich.
- Make-Ahead: Prepare the horseradish mayo and caramelized onions in advance to save time on a busy night.