I have been using this toaster oven for about a week now and I am obsessed! Here in northern Indiana we are nearing the end of summer so its naturally 90 degrees still and I don't like using my actual oven. This has been the perfect kitchen assistant without making me need to sit on my air conditioner. Its definitely large enough for my casserole dish or baking pan to fit inside. It evenly cooked my favorite Chicken broccoli cheesy rice casserole and I use frozen broccoli. You must either have counter space for it or a place where you can easily store it because of it's size. Totally worth it though because I can already tell this will be a life saver this holiday season. I never have enough oven space for those occasions. [This review was collected as part of a promotion.]