01 -
Preheat oven to 375°F. In a large bowl, combine melted butter, minced garlic, parsley, and salt. Toss bread cubes until evenly coated and set aside.
02 -
Heat a 12-inch cast-iron skillet over medium heat. Add ground beef and diced onion; cook 5 to 6 minutes until beef is browned and onion is softened. Drain excess fat.
03 -
Stir in minced garlic, marinara sauce, oregano, black pepper, and salt. Simmer the mixture for 5 minutes, then remove from heat.
04 -
In a bowl, blend ricotta cheese, egg, and Parmesan until smooth.
05 -
Remove half the meat sauce from skillet and set aside. Layer half the garlic bread cubes over remaining sauce in skillet. Dollop half the ricotta mixture over bread cubes and sprinkle with 1 cup mozzarella. Spoon reserved meat sauce over cheese layer. Repeat with remaining bread cubes, ricotta mixture, and mozzarella.
06 -
Cover loosely with aluminum foil and bake for 20 minutes.
07 -
Remove foil and bake an additional 10 to 15 minutes until cheese is bubbling and top is golden brown.
08 -
Cool for 10 minutes before serving. Optionally garnish with extra parsley.