Add the oil to a skillet over medium heat. Once hot, add the bell pepper and sauté for 2 minutes. Add the sausage and cook through. Once cooked, remove any excess grease. Remove the skillet from heat and add the cubed cream cheese. Stir until the cream cheese is melted.
To a medium-sized bowl, add the sausage mixture, cauliflower rice, Italian seasoning, and 1/2 cup of cheese. Stir to combine.
Grease a 9x13 baking dish and pour the mixture in. Top with the remaining cheese and cover with aluminum foil. Bake for 25 minutes, then remove the foil and bake for an additional 12 minutes, uncovered. Enjoy!