01 - Preheat oven to 375°F (190°C) and lightly grease a 6-cup muffin tin.
02 - Bring a large pot of salted water to a boil. Cook lasagne sheets for 3 to 4 minutes until pliable, then drain and set aside.
03 - Heat olive oil in a medium skillet over moderate heat. Sauté onion for 2 to 3 minutes until softened, then add garlic and cook for 1 minute. Stir in ground beef or turkey and cook until browned. Blend in tomato paste, crushed tomatoes, oregano, basil, salt, and pepper. Simmer 5 minutes until sauce is thickened. Remove skillet from heat.
04 - In a mixing bowl, blend ricotta cheese, egg, Parmesan, parsley, a pinch of salt, and pepper until creamy and combined.
05 - Cut each lasagne sheet in half. Arrange 2 overlapping halves in each muffin cup, pressing to fit and allowing edges to extend over the rim.
06 - Spoon half of the meat sauce into the prepared cups. Add a spoonful of cheese mixture to each, then top with remaining meat sauce. Sprinkle with mozzarella cheese.
07 - Bake the pasta cups for 20 to 25 minutes until cheese is bubbly and edges are golden. Remove from oven and let cool for 5 minutes before lifting out of tin.
08 - Serve warm, garnished with extra chopped parsley if preferred.