Zucchini Gratin - Loaded with tender sliced vegetables, covered in a creamy béchamel sauce, and topped with crunchy panko breadcrumbs and Gruyère cheese, this zucchini casserole recipe makes a delicious #entrée or #sidedish.| #yayforfood | #dinner | #gratin | #zucchini | #dinnerrecipes | #cheese | #easyrecipes | #recipeoftheday | #meals