This savory galette combines rosemary, gruyere, squash, and kale, making for a well-balanced flavor. Perfect as a holiday starter or a make-ahead brunch option, this dish uses kale for its lower water content, preventing a soggy crust. The preparation involves roasting butternut squash and sautéing onions and kale before mixing with eggs and gruyere cheese, all wrapped in a flaky pie crust.