01 - In a large skillet over medium heat, melt the butter. Add the minced garlic and chopped shallot. Sauté for 2 minutes, until fragrant and translucent.
02 - Stir in the sun-dried tomatoes and cook for 1 minute to release their flavors.
03 - Pour in the broth, scraping up any browned bits from the pan. Simmer for 2 minutes.
04 - Lower the heat and add the heavy cream. Stir well and bring to a gentle simmer.
05 - Add the grated Parmesan cheese and Italian herbs. Stir until the cheese is melted and the sauce begins to thicken, about 3–4 minutes.
06 - Add the chopped spinach and cook until wilted, about 1–2 minutes.
07 - Season with salt, black pepper, and pepper flakes to taste. Serve hot over pasta, chicken, shrimp, or vegetables.