In a pan, sauté the spinach until wilted. Drain excess moisture and chop finely.
In a bowl, mix spinach, ricotta, Parmesan, and egg. Season with salt and pepper.
Place a small spoonful of filling in the center of a wonton wrapper. Moisten edges with water and fold to seal.
Repeat the process until the filling is used up.
In a pot, bring salted water to a boil. Cook ravioli until they float to the surface, about 3 minutes.
In a saucepan, melt butter and sauté garlic. Add cream and cook until slightly thickened.
Drain ravioli and toss gently with the creamy garlic sauce.
Serve hot, garnished with extra Parmesan if desired.