Vegetarian Pumpkin Lasagna Recipe

Ingredients

• 1/2 pound sliced fresh mushrooms
• 1 small onion, chopped
• 1/2 teaspoon salt, divided
• 2 teaspoons olive oil
• 1 can (15 ounces) solid-pack pumpkin
• 1/2 cup half-and-half cream
• 1 teaspoon dried sage leaves
• Dash pepper
• 9 no-cook lasagna noodles
• 1 cup reduced-fat ricotta cheese
• 1 cup shredded part-skim mozzarella cheese
• 3/4 cup shredded Parmesan cheese