Steam the fresh spinach until completely wilted, then squeeze out all excess moisture using a clean kitchen towel and finely chop.
In a large mixing bowl, combine the ground turkey, low-fat cottage cheese, egg, chopped spinach, ground nutmeg, garlic powder, sea salt, and black pepper until well incorporated.
Lay the fresh pasta sheets onto a clean, lightly floured surface and place small mounds of the turkey-spinach filling approximately 2 inches apart along the center.
Fold the pasta sheet over the filling and press firmly around each mound to remove air pockets and seal the edges, then use a pastry wheel or knife to cut into individual square dumplings.
Bring the low-sodium vegetable broth to a gentle simmer in a wide, shallow pan over medium heat.
Carefully drop the maultaschen into the simmering broth and cook for 8 to 10 minutes, or until the pasta is tender and the turkey filling is thoroughly cooked.
Serve the dumplings immediately in shallow bowls, ladling a small amount of the warm cooking broth over the top.