Preheat your oven to 400 degrees F. Cook pasta according to package directions. Drain the pasta and set aside.
Meanwhile, heat olive oil in a 10-inch cast-iron skillet over high heat. Add the ground turkey; cook, until lightly browned, 4 to 5 minutes.
Next, Add the cauliflower, bell peppers, onions, carrots and garlic; cook, stirring often, until the vegetables are softened, 5 to 7 minutes.
Add the tomato sauce, brown sugar, Worcestershire, mustard, salt and pepper. Bring to a boil over medium-high heat. Reduce heat to medium; simmer, stirring occasionally, for 2 minutes.
Next, stir in the cooked elbow pasta into the turkey mixture; sprinkle evenly with cheese. Bake until the cheese is melted, 5 to 7 minutes. Serve and enjoy!