In a large skillet, heat the oil over medium-high heat. Season the pork with salt and pepper to taste. Cook in the skillet for 3-4 minutes per side, or until a nice crust forms.
Remove the pork from the skillet and set aside.
In the same skillet, cook the mushrooms until tender. Stir in the remaining ingredients and season with salt and pepper. Add the pork back in the skillet and simmer for an additional 5-6 minutes, or until the sauce starts to reduce and the pork is cooked through. Remove from the heat and serve.