In a large pot, heat a drizzle of olive oil over medium heat.
Add the chopped onion, carrot, and celery; sauté until softened, about 5 minutes.
Stir in the minced garlic and cook for an additional minute.
Pour in the diced tomatoes and broth; bring to a boil.
Add the dried thyme and season with salt and pepper.
Stir in the pastina and reduce heat to a simmer.
Cook for about 8-10 minutes until the pasta is tender.
Taste and adjust seasoning as necessary.
Remove from heat and let cool slightly.
Serve hot, garnished with fresh parsley.