Cook the Gnocchi: Bring a large pot of salted water to a boil. Add the gnocchi and cook according to package instructions, usually until they float to the surface. Drain and set aside.
Sauté Veggies: In a large skillet, heat the olive oil over medium heat. Add the chopped onion and sauté for 2-3 minutes until translucent. Stir in the minced garlic and cook for an additional minute.
Add Peppers: Mix in the diced red and green bell peppers. Sauté for 5-7 minutes until the peppers are tender.
Create the Sauce: Lower the heat and pour in the heavy cream, stirring to combine. Add the Cajun seasoning, mixing well. Allow the sauce to simmer for about 3-4 minutes until slightly thickened.
Incorporate Gnocchi: Add the cooked gnocchi to the sauce and gently stir until they are well-coated. Gradually mix in the grated Parmesan cheese until melted and creamy. Season with salt and pepper to taste.
Serve: Remove from heat and garnish with fresh chopped parsley.