These stuffed portobello mushroom caps are the perfect vegetarian entrée. Savory, filling, and easy to make, this healthy meal is perfect for weeknights or fancier dinners.
Preheat the oven to 400° F. Gently wash and pat dry your mushroom caps. Brush the caps lightly with olive oil and cook, rib side down, on a lined sheet pan in the oven for 10 minutes.
Drain and chop the artichoke hearts and roasted red peppers. Saute them with the minced onion until the onion becomes translucent.
Add the garlic, spinach, olives, red pepper flakes, pesto, and feta cheese and continue to cook for 5 - 10 minutes, until the juices have cooked off and the flavors have combined.
When the mushrooms are finished cooking, remove from the oven and mop up any juice that was released.
Flip the baked portobello mushrooms over and fill them with the vegetable mixture until you’ve used it all. Sprinkle each cap with panko bread crumbs, pressing down gently to get the bread crumbs to stick.
Bake the stuffed mushrooms in the oven for another 10-15 minutes, until the feta cheese is melty and the bread crumbs are golden brown.