Bring a large pot of salted water to a boil, then add the tortellini and cook according to package instructions until al dente. Drain and set aside.
While the pasta cooks, heat olive oil in a sauté pan over medium heat. Add the minced garlic and sauté until fragrant, about 30 seconds, until it begins to turn golden.
12 oz tortellini
Add the chopped spinach to the pan and cook while stirring, until wilted and dark green, about 2-3 minutes.
12 oz tortellini
Pour in the heavy cream and bring to a gentle simmer, allowing the mixture to thicken slightly, about 2 minutes. Stir frequently to prevent scorching.
12 oz tortellini
Add lemon zest and juice to the sauce, stirring well to incorporate a bright, citrus flavor. Season with salt and pepper to taste.
12 oz tortellini
Combine the cooked tortellini with the sautéed spinach and lemon cream sauce in the pan. Toss gently until evenly coated and heated through, about 1-2 minutes.
12 oz tortellini
Remove from heat and stir in grated Parmesan cheese. Serve immediately, garnished with additional lemon zest or cheese if desired.
12 oz tortellini