01 - Melt butter in a large skillet over medium heat. Add minced garlic and chopped shallot. Sauté for 2 minutes until fragrant and translucent.
02 - Stir in julienned sun-dried tomatoes and cook for 1 minute to release flavors.
03 - Pour in broth, scraping up any browned bits from the bottom of the pan. Simmer for 2 minutes.
04 - Lower heat and stir in heavy cream. Mix thoroughly and bring to a gentle simmer.
05 - Add grated Parmesan cheese and Italian herbs. Stir continuously until cheese melts and sauce begins to thicken, approximately 3 to 4 minutes.
06 - Add chopped spinach and cook until just wilted, about 1 to 2 minutes.
07 - Season with salt, black pepper, and red pepper flakes to taste. Serve immediately over pasta, chicken, shrimp, or vegetables.