1Heat the olive oil in a large skillet over medium-high heat.
Add the cubed steak to the skillet and cook until browned on both sides, about 3-4 minutes per side. Remove the steak from the skillet and set aside.
In the same skillet, add the chopped onion and cook until softened, about 5 minutes.
Add the minced garlic and sliced mushrooms to the skillet and cook for another 3-4 minutes until the mushrooms are tender.
Pour in the beef broth and Worcestershire sauce, stirring to combine.
In a small bowl, mix the cornstarch with the water to create a slurry. Add this to the skillet and stir until the gravy thickens.
Return the cubed steak to the skillet, coating it with the mushroom gravy.
Season with black pepper and salt to taste.
Simmer for an additional 5-10 minutes until the steak is cooked through and the flavors are well combined.
Serve hot and enjoy your Cubed Steak with Mushroom Gravy.