Remove excess moisture from the steak using paper towels, trim unnecessary fat, and season with olive oil, coarse salt, and ground pepper. Let it marinate for 10-15 minutes.

Wash cherry tomatoes and mixed greens under running water and drain well.

Slice the red onion thinly and soak in water briefly to reduce its sharpness. Cut cherry tomatoes into halves or quarters.

Mix olive oil, balsamic vinegar, lemon juice, salt, honey, minced garlic, and pepper to prepare the salad dressing.

Season mushrooms with salt and pepper, then sauté until golden brown.

Heat a pan on high heat, add olive oil, and sear the marinated steak on both sides.

Rest the cooked steak under foil for 5 minutes.