Boil the tortellini according to package instructions, drain and set aside.
Meanwhile heat 1 tbsp olive oil in a large skillet over medium high heat. Sauté the bell pepper, onion and sausage in the skillet until the peppers and onions are tender and the sausage is browned slightly (about 5 minutes). Sprinkle with the garlic powder and cajun seasoning and cook until fragrant.
Pour in the heavy cream and parmesan cheese and stir until the sauce is thick and creamy (about 2 minutes). Add the drained tortellini to the skillet and stir to coat.
Garnish with extra parmesan cheese and green onions. Serve hot and enjoy!
If you'd like to make this LOW CARB, simply sub out the tortellini for steamed cauliflower.