Place a large dutch oven over medium high heat. Add 1 tablespoon olive oil and when the oil is hot, stir in 1 large onion, chopped 3 stalks celery, chopped 4 carrots, peeled and chopped and ½ teaspoon kosher salt. Cook for 2-3 minutes until the vegetables start to get tender and the onions and celery look translucent.
Stir in 8 cups homemade turkey or chicken stocks and 2 bay leaves. Heat to boiling. Reduce heat to a low simmer and cook for 10 minutes with the lid resting askew on the pot.
Stir in the 3 cups diced leftover turkey meat and 1 cup mini alphabet pasta or other pasta and return the heat to a rapid simmer, stirring occasionally. Cook until the pasta is just al dente and remove from heat. The pasta will continue to absorb the broth. Stir in ¼ cup fresh parsley. Serve.