Preheat your oven to 375°F.
Heat olive oil in a skillet over medium heat. Add garlic and sauté for about 30 seconds.
Add ground beef or sausage, season with salt and pepper, and cook until browned. Drain excess fat.
Stir in 2/3 of the marinara sauce. Simmer for 5 minutes, then remove from heat.
In a bowl, mix ricotta, egg, Parmesan, and Italian seasoning until smooth.
Spread each noodle with a layer of ricotta mixture, then a layer of meat sauce. Roll them up gently.
Spoon a bit of sauce into a 9x13 baking dish. Place roll-ups seam-side down.
Top with remaining sauce and sprinkle mozzarella all over.
Cover with foil and bake for 20 minutes. Remove foil and bake another 10 minutes until cheese is bubbly.
Let cool for 5 minutes. Garnish with parsley and serve.