I made this using grilled cauliflower and grilled garlic but roasted or even steamed any leftover will be good in this. This recipe can be cut in 1/2 to make just one pie. You can also add a crust store bought or home made. If you do opt for the crust preheat oven to 425 and bake 15 minutes then lower oven to 325 and bake 20-30 more minutes. Makes 2 pies or 1 9x13 casserole.