Heat a large deep skillet over medium heat and add the oil and butter. Add the sliced mushrooms and sauté until they have softened and become brown. Add the minced garlic and continue to sauté for another minute until the garlic is fragrant.
Now add the marinara sauce, diced tomatoes, Italian seasoning, garlic powder, salt, black pepper, and water to the skillet. Stir everything together to combine.
Stir in the cheese ravioli. Cover the skillet with a lid and simmer for 5 minutes. After 5 minutes remove the lid, give the ravioli a stir, then cook for 5 more minutes uncovered.
Now sprinkle the shredded mozzarella cheese and parmesan cheese on top. Allow the cheese to melt for several minutes on the stove top or broil the cheese for a couple minutes in the oven until melted and slightly brown on top.**
Sprinkle with chopped parsley (optional) and enjoy with garlic bread or your favorite side salad.
*You can also use frozen cheese ravioli to save more money. Just make sure to cook a couple minutes longer until cooked through.**Make sure you are using an oven-safe skillet if you choose to broil the cheese in the oven.