Can you caramelize onions and mushrooms together?

You can , but for the best texture and flavor, it's better to start with the onions first. They take longer to soften and release their natural sugars. Once they’re golden and caramelized (about 15–20 minutes), add the mushrooms and sauté until browned. This keeps everything rich and flavorful without becoming mushy.

How do you make steak with onions and mushrooms?

Start by searing a well-seasoned ribeye steak in a hot skillet until it reaches your preferred doneness. Remove and rest the steak. In the same pan, caramelize the onions, then add mushrooms and a splash of balsamic vinegar. Pile the warm mixture over the sliced steak and serve immediately for maximum flavor.

How does Gordon Ramsay cook a ribeye steak?

Chef Ramsay uses high heat, simple seasoning (salt and pepper), and a hot skillet. After searing the steak, he adds garlic, fresh herbs like rosemary or thyme, and plenty of butter for basting. He emphasizes letting the steak rest before slicing so the juices stay inside. It’s a method you can easily replicate at home.

What mushrooms go best with ribeye steak?

Baby portobello mushrooms (also called cremini) are a go-to for their rich, meaty flavor. White button mushrooms work well too, especially if you're looking for something mild. Shiitake mushrooms offer a more intense, earthy taste and pair beautifully with the boldness of ribeye.

Ribeye Steak with Caramelized Onions and Mushrooms

Ingredients

Scale

🥩 For the Steak

2 ribeye steaks (about 1 inch thick)
3 tbsp chopped fresh rosemary
Sea salt and freshly ground black pepper, to taste
1 tbsp cooking fat (butter, ghee, or olive oil)

🧅 For the Caramelized Onions & Mushrooms

2 sweet onions, thinly sliced
1 cup baby portobello mushrooms, sliced
2 tsp balsamic vinegar
2 tbsp olive oil (divided)

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Instructions

Prep the Steaks
Remove the ribeye steaks from the fridge about 30 minutes before cooking. Pat them dry and season both sides generously with salt, pepper, and chopped rosemary. Let rest at room temperature while you prepare the onions and mushrooms.
Caramelize the Onions
Heat 1 tbsp olive oil in a skillet over medium heat. Add the sliced onions and cook for 15–20 minutes, stirring occasionally, until soft, golden, and caramelized.
Sauté the Mushrooms
Add the sliced baby portobellos to the skillet with another tablespoon of olive oil. Cook for 6–8 minutes until mushrooms are browned and tender. Deglaze the pan with balsamic vinegar and stir to coat. Remove mixture from skillet and set aside.
Sear the Ribeye Steaks
In the same pan, add the cooking fat and increase heat to medium-high. Sear the steaks for about 3–4 minutes per side for medium-rare, adjusting time based on thickness. Sear the edges as well for full flavor.
Rest and Serve
Let the steaks rest for 5 minutes to retain juices. Top with the warm caramelized onion and mushroom mixture. Serve immediately.

Notes

Letting the steaks rest before slicing keeps them juicy.
Avoid crowding the mushrooms; they’ll brown better when spaced out.
Use a meat thermometer for accuracy: 130°F for medium-rare.
Sweet onions are best for caramelizing due to their natural sugars.
Great served with mashed potatoes, roasted veggies, or cauliflower mash for a low-carb option.

Author: Sanae
Prep Time: 10 minutes
Cook Time: 30 minutes
Category: Dinner
Method: Stovetop / Skillet
Cuisine: American
Diet: Gluten Free

Nutrition

Serving Size: 1 steak with onions & mushrooms
Calories: 715
Sugar: 6g
Sodium: 520mg
Fat: 54g
Saturated Fat: 22g
Unsaturated Fat: 28g
Trans Fat: 2g
Carbohydrates: 9g
Fiber: 2g
Protein: 48g
Cholesterol: 155mg