In a large, heavy-bottomed pot, warm the olive oil over medium heat. Once the oil is shimmering, add the finely chopped onion, diced carrot, and diced celery. Sauté the vegetables for about 5-7 minutes, stirring occasionally, until they become soft and aromatic.
Add the minced garlic, along with the dried basil and oregano to the pot. Cook for an additional 1-2 minutes, stirring frequently, until the garlic releases its fragrant aroma.
Carefully pour in the vegetable broth and add the diced tomatoes, with their juices. Increase the heat slightly and bring the mixture to a gentle simmer.
Once the soup is simmering, stir in the pastina pasta. Refer to the package instructions for cooking time, usually around 5-7 minutes, until the pasta is al dente and has absorbed some of the broth.
Gently fold in the chopped spinach and season the soup with salt and freshly cracked black pepper to taste. Allow the soup to cook for an additional 2-3 minutes, just until the spinach has wilted and brightened in color.
Remove the pot from heat. Ladle the warm soup into bowls, and generously top each serving with freshly grated Parmesan cheese. Garnish with fragrant fresh basil leaves for an added touch of flavor and color.
Notes
For an inviting presentation, serve the soup in rustic bowls and garnish with extra basil and Parmesan.