8 uncooked lasagna noodles
4 teaspoons olive oil
1/2 cup finely chopped onion
1 (8-ounce) package presliced mushrooms
1 (6-ounce) package fresh baby spinach
3 garlic cloves, minced
1/2 cup (2 ounces) shredded mozzarella cheese
1/2 cup part-skim ricotta cheese
1/4 cup minced fresh basil, divided
1/2 teaspoon salt
1/4 teaspoon crushed red pepper

Sauce:
1 tablespoon red wine vinegar
1/4 teaspoon salt
1/4 teaspoon freshly ground black pepper
2 garlic cloves, minced
1 (14.5-ounce) can diced tomatoes, undrained
1 (7-ounce) bottle roasted red bell peppers, undrained
1/8 teaspoon crushed red pepper