Grilled Steak Sandwich with Mushrooms and Caramelized Onions

Sink your teeth into the ultimate Grilled Steak Sandwich with Mushrooms and Caramelized Onions—a gourmet twist on a classic favorite. This hearty sandwich features tender, juicy ribeye steak grilled to perfection, paired with sweet, golden caramelized onions and savory garlic-infused mushrooms. Nestled in a toasted baguette or ciabatta roll spread with creamy mayonnaise and topped with peppery arugula, every bite delivers a symphony of rich, satisfying flavors. Perfect for a quick dinner or casual gathering, this recipe combines simple ingredients with elevated techniques, like caramelizing onions for added depth. Ready in just 45 minutes, this steak sandwich is your go-to for a restaurant-quality meal at home.

Nutriscore Rating: 65/100

Prep Time:15 mins

Cook Time:30 mins

Total Time:45 mins

Servings: 4

Ingredients

• 1 pound ribeye steak
• 1 teaspoon salt
• 0.5 teaspoon black pepper
• 3 tablespoons olive oil
• 2 medium yellow onion
• 1 teaspoon granulated sugar
• 8 ounces button mushrooms
• 2 cloves garlic
• 4 pieces French baguette or ciabatta roll
• 4 tablespoons mayonnaise
• 1 cup arugula

Directions

Step 1

Season the steak on both sides with salt and black pepper. Let it rest for 10 minutes while prepping other ingredients.

Step 2

Slice the onions thinly. In a skillet, heat 1 tablespoon of olive oil over medium heat. Add the onions and cook, stirring often, for about 15 minutes until golden and tender. Sprinkle with granulated sugar and continue to cook for another 5 minutes to caramelize. Remove from the skillet and set aside.

Step 3

Wipe the skillet clean and heat another tablespoon of olive oil over medium heat. Add the sliced mushrooms and cook for 8-10 minutes until browned and softened. Mince the garlic and add it to the mushrooms, cooking for 1 more minute. Remove from heat and set aside.

Step 4

Preheat the grill or grill pan over medium-high heat. Brush the steak with 1 tablespoon of olive oil and place it on the grill. Cook for 4-5 minutes per side for medium-rare, or to your preferred level of doneness. Remove the steak from the grill and let it rest for 5 minutes before slicing thinly against the grain.

Step 5

While the steak rests, slice the baguettes or ciabatta rolls in half and toast them lightly on the grill, if desired.

Step 6

Spread 1 tablespoon of mayonnaise on each bottom half of the bread. Layer slices of steak, caramelized onions, mushrooms, and a handful of arugula on top. Close the sandwich with the upper half of the bread.

Step 7

Serve immediately and enjoy your Grilled Steak Sandwich with Mushrooms and Caramelized Onions!

Nutrition Facts

Serving size	(1280.9g)

Amount per serving	% Daily Value*
Calories	2678.3

Total Fat 152.0g	0%
Saturated Fat 37.5g	0%
Polyunsaturated Fat 7.1g
Cholesterol 418.3mg	0%
Sodium 5503.0mg	0%
Total Carbohydrate 184.4g	0%
Dietary Fiber 11.6g	0%
Total Sugars 21.0g
Protein 152.4g	0%

Vitamin D 18.1IU	0%
Calcium 189.6mg	0%
Iron 19.3mg	0%
Potassium 2728.9mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 50.4%

Protein: 22.5%

Carbs: 27.2%