Heat oven to 450°F. In 12-inch skillet, cook sausage, onion, carrots, bell pepper and garlic over medium heat 10 to 12 minutes, stirring occasionally, until sausage is thoroughly cooked; drain. Stir in marinara sauce, pepperoni and olives. Simmer 3 to 5 minutes or until thickened. Remove from heat; stir in cheese blend.