1. Cook sausage in a Dutch oven over medium heat, stirring often, 10 minutes or until meat crumbles and is no longer pink; drain. Add mushrooms and bell pepper; cook over medium heat, stirring frequently, 5 minutes. Stir in next 5 ingredients; bring to a boil. Reduce heat to low, and simmer, stirring occasionally, 20 minutes.
2. Preheat oven to 400°. Cut bread in half lengthwise. Place bread, cut side up, on an aluminum foil-lined baking sheet. Bake 5 to 6 minutes until toasted.
3. Spoon sausage mixture onto toasted bread, and sprinkle with cheeses. Bake at 400° for 5 to 7 minutes or until cheese is melted and bubbly.
Note: For testing purposes only, we used Jennie-O Sweet Lean Italian Turkey Sausage.