01 -
Heat olive oil in a large skillet over medium-high heat. Add Italian sausage and cook, breaking it into small pieces, until no pink remains. Transfer sausage to a plate and set aside.
02 -
In the same skillet, add diced onion and cook until softened, about 3 to 4 minutes. Stir in minced garlic and cook for 30 seconds until fragrant.
03 -
Pour in chicken stock, increase heat, and bring to a low boil, scraping up browned bits from the pan.
04 -
Add frozen tortellini to the skillet and cook for 3 to 4 minutes or according to package instructions, stirring occasionally.
05 -
Stir in heavy cream and mix until combined.
06 -
Return cooked sausage to the skillet. Add fresh spinach and grated Parmesan cheese. Simmer for several minutes until spinach wilts and sauce thickens slightly.
07 -
Season with red pepper flakes, salt, and freshly ground black pepper to taste. Serve immediately while hot.