Bring a large pot of water to a boil—salt generously and cook the 1 lb. penne pasta to al dente according to package directions. Drain and set aside,
Place the ¾ lb chicken breasts in a small pan with 1 bay leaf—add water to just reach the top of the meat (don’t cover completely). Bring to a boil, then reduce heat and simmer gently for 10-12 minutes until cooked through (165°F inside). Shred the chicken into small pieces with forks or dice finely
Heat 1 tbsp. extra virgin olive oil in a large, deep sauté pan over medium heat—melt in 2 tbsp. butter. Add the chopped onion and garlic, season with salt and black pepper to taste, and cook for 8-10 minutes, stirring occasionally, until softened and fragrant.
Whisk in ½ cup white wine, then add 1 cup chicken stock—stir for 1 minute to combine. Stir in 2 cups heavy cream and season with a few grates of nutmeg.
Let the sauce thicken over low heat for 2-3 minutes—then stir in the defrosted spinach and chopped artichoke hearts, heating through. Add 1 cup grated Asiago and cream cheese, stirring until melted into a creamy, dreamy sauce. Turn off the heat.
Add the drained pasta and shredded chicken to the sauce—toss to combine, ensuring every piece is coated in the creamy goodness. Taste and adjust salt and pepper as needed.
Serve hot, garnished with a generous sprinkle of freshly grated Parmigiano-Reggiano—savor this hearty, nostalgic triumph!