Spinach and Artichoke Stuffed Portabellos

olive oil, divided

garlic, minced, divided

medium-large portabello mushrooms, wiped clean and stems removed

Kosher salt

Freshly ground black pepper

cream cheese, at room temperature (reduced fat is fine)

mayonnaise (reduced fat is fine)

minced fresh thyme leaves, divided

frozen chopped spinach, thawed and squeezed dry

frozen artichokes, thawed, patted dry and coarsely chopped

coarse breadcrumbs

finely grated Parmesan cheese