#1 Heat the oven to 400 degrees #2 Meanwhile, heat olive oil in a large skillet over medium. Add the garlic and red-pepper flakes and cook until fragrant, about 1 minute. Add the spinach, stirring frequently, about 3 minutes. Stir in the chopped artichokes. Stir in the cream and bring to a simmer over medium-high heat #3 Stir in the Parmesan until melted. Remove from the heat then carefully stir in the tortellini. Season to taste with salt and pepper #4 Transfer the pasta to a casserole dish. Sprinkle with the mozzarella and bake until bubbling, 20 to 25 minutes. Broil until browned in spots, 1 to 2 minutes, if desired.