Other Ideas:
The tahini sauce is wonderful in this bowl, and great as a salad dressing or over chicken or fish. But, use any drizzle you like! Salad dressing, a miso sauce, the opportunities are endless.
Go nuts with the base for this dish! Farro, any type of rice, lentils, even pasta works great.
Veggie ideas for roasting: Cauliflower, broccoli, carrots, eggplant, bell peppers.
I love any/all cheeses on this! Grated parm, shredded cheddar, even crumbled goat cheese is delicious.
The spinach can be swapped for kale or collards, OR subbed with a raw veggie like shredded cabbage or lettuce to save some cooking time.
Topping ideas: roasted chopped nuts of all sorts, chopped pickled jalapeno, diced tomato, torn fresh herbs, diced cucumber.