Lazy Day Lasagna

• Ingredients:
  1 pound lean ground beef
  1 cup minced onion, optional
  2 garlic cloves, minced
  10 ounces fresh spinach, chopped
  8 ounces fresh mushrooms, sliced
  1 teaspoon dried basil
  1 teaspoon dried oregano
  Salt and pepper, to taste
  12 ounces frozen cheese ravioli, do not thaw
  1 jar spaghetti sauce
  8-ounces provolone sliced
  1/2 cup grated Parmesan cheese (about 2 ounces)
  
  
  Directions
  Preheat the oven to 350 degrees F.
  Brown the beef, drain and set aside.  Saute spinach in a little olive oil, with the onion, garlic, herbs, and salt and pepper in a large oven-safe skillet, remove from skillet and set aside.  Put the still-frozen ravioli into large skillet pan, breaking them up if they are clumped. Spread the ground beef and spinach mixture evenly over the ravioli, and ladle the spaghetti sauce evenly over the ground beef mixture. Over medium heat, without stirring, cook until the ravioli is heated through and beginning to brown on the bottom, about 10 minutes.
  Take the skillet off the heat, lay the provolone slices over the ground beef mixture, and sprinkle the whole thing with the Parmesan.  Bake for 10 minutes, or until the cheese is melted.  Serve hot.