baked sausage and sweet potatoes

Ingredients

• 1 pound fresh or smoked link sausage, cut into 3/4 inch pieces
• 2 large sweet potatoes, cut into 3/4 inch cubes
• 1 large onion, chopped into 1/2 inch pieces
• 1 large green bell pepper, chopped into 1/2 inch pieces
• 8 ounces cremini mushrooms or white button, halved or grated
• 1 teaspoon dried thyme leaves
• 1/2 teaspoon dried or rubbed sage leaves
• - salt and pepper, to taste
• - olive or other vegetable oil