Vegetable Stuffed Portabella Mushrooms

large portabella mushrooms, wiped with a damp paper towel and stalk trimmed

olive oil

large sweet onion, diced

medium zucchini, diced

roasted red pepper, diced

– 6 sun dried tomatoes, chopped

– 3 cloves garlic, minced

large handful of spinach

dried oregano, crushed between your fingers

crushed red pepper flakes

freshly ground black pepper,

dried breadcrumbs

grated Parmesan

mozzarella cheese (I use the mozzarella made with 2% milk)