Preheat the oven to 350°F (175°C). Spray a 9×13-inch baking dish with cooking spray.
Cook sausage in a large skillet over medium heat until browned and fully cooked. Drain excess grease.
Stir marinara sauce into the cooked sausage and heat until combined.
Spread a layer of the meat sauce across the bottom of the prepared baking dish.
Arrange a layer of frozen ravioli over the sauce.
In a bowl, mix cottage cheese, softened cream cheese, Parmesan cheese, and Greek yogurt until smooth and combined.
Spread the creamy cheese mixture over the ravioli layer.
Add another layer of ravioli and remaining meat sauce.
Sprinkle shredded mozzarella cheese evenly over the top.
Cover the casserole and bake until heated through and bubbling.
Remove the cover and continue baking until the cheese melts and becomes lightly browned.
Garnish with fresh parsley and basil before serving.
