Very Veggie Lasagna
1 (14.5 ounce) can no-salt-added diced tomato… 1 (15 ounce) container part-skim ricotta chee… 1 cup chopped onion 1 egg, lightly beaten 1 tablespoon olive oil 1 teaspoon Italian seasoning, crushed 1 teaspoon salt, divided 12 fresh sage leaves 12 lasagna noodles 2 (10 ounce) packages frozen diced butternut … 2 (8 ounce) cans no-salt-added tomato sauce 2 cloves garlic, minced 2 cups shredded part-skim Italian cheese blen… 2 pounds button mushrooms, chopped 2 teaspoons chopped fresh rosemary 3 tablespoons balsamic vinegar cooking spray ¼ crushed red pepper ½ teaspoon black pepper