Cook Texas toast according to the package. Do NOT overcook. In a medium bowl add ground beef, Parmesan cheese, Italian dressing, garlic & onion powder, salt & pepper; mix in to ground beef. Fry ground beef mixture over medium-high heat until browned. Once browned drain any grease. Next, mix spaghetti sauce and ricotta cheese into browned beef.
To Assemble Sandwiches:
Preheat oven to 350 degrees.
Top Texas toast with mozzarella cheese, beef mixture, pepperoni, a little more mozzarella and top with a slice of Texas toast. Wrap in foil and bake @ 350 degrees for 10 minutes or until cheese has melted.
Do not over cook the Texas toast or your sandwich will be too hard to eat.