Preheat the oven to 425°F.
Spray a 12 muffin tin with oil.
Place the cooked spaghetti squash in a bowl, along with the egg white, parsley, garlic powder, salt, pepper, and cheese and combine well.
Scoop 1/4 cup into each tin, pressing up the side to create a nest.
Bake 18 to 20 minutes, until the edges become golden and crisp.