In large skillet or Dutch oven, brown ground beef with onion power, garlic powder and salt and pepper, to taste. Drain excess grease. Mix in marinara sauce, heavy whipping cream, ricotta and spinach.
Break up lasagna noodles and add to skillet. Cover and let set over medium heat 10 minutes. Stir and top with mozzarella cheese. Cover and let set 10 minutes.
Serve with bread and top with Parmesan cheese, if desired.