Steaks With Mushroom Gravy

Bahan-bahan (4 porsi)

• 4 8 oz boneless ribeye steaks (1-inch thick, or scotch fillet, sirloin, rump, strip or porterhouse steaks)
• 1 pinch salt (to season)
• 1 pinch pepper (to season)
• 2 tablespoons olive oil
• 1 onion (yellow, white or brown, sliced)
• 2 cloves garlic (minced)
• 7 ounces brown mushrooms (sliced)
• 3 tablespoons unsalted butter
• 3 tablespoons plain flour
• 2 1/2 cups beef broth (or stock)
• 2 teaspoons Worcestershire sauce
• 1 pinch salt (to taste)
• 1 pinch pepper (to taste)