Sauté the diced onion and garlic until they become fragrant.
Stir in the cream cheese and spinach until they become soft, and then remove the mixture from the heat.
Using a vegetable peeler, create long, thin noodles from the zucchini by peeling them lengthwise.
Lay out the zucchini noodles vertically and horizontally, overlapping them to form a base.
Place a generous tablespoon of the filling in the center of the zucchini noodles. Begin folding the zucchini noodles over the mixture in a clockwise direction.