Step 6 of 7

Distribute the spinach mixture evenly over each mushroom; finish by topping with the remaining mozzarella and breadcrumbs.
We skipped the pepperoni as it’s not a favorite in our household. I didn't pre-bake the mushrooms and instead cooked them for 20 minutes total. I'll add some chicken next time. We ate this as a main course with a side of couscous.
What is the required oven temperature? Do you bake these or set the oven to broil?
Prepared the recipe exactly as written.