01 - Melt butter in a large skillet over medium heat. Add diced onion and sauté for 2-3 minutes until translucent and fragrant.
02 - Stir in minced garlic and cook for 1 minute until aromatic, being careful not to brown.
03 - Add orzo pasta to the skillet, stirring constantly for 1 minute to lightly toast and enhance nutty flavor.
04 - Pour in chopped sun-dried tomatoes and vegetable broth. Bring mixture to a gentle simmer, stirring to combine.
05 - Simmer for 8-10 minutes, stirring occasionally, until orzo is al dente and most liquid has been absorbed.
06 - Pour in heavy cream, dried thyme, and chili flakes. Mix thoroughly and simmer for 2-3 minutes until sauce thickens and coats the pasta.
07 - Fold in baby spinach and Parmesan cheese, stirring continuously until spinach wilts and cheese melts completely. Season generously with salt and black pepper.
08 - Remove from heat immediately. Transfer to serving plates and garnish with fresh basil leaves and additional grated Parmesan if desired.