Alice Mongkongllite / BuzzFeed Toss portobello mushroom caps in salt, pepper, and olive oil and roast at 425°F for 20 to 25 minutes. Fill with meats, cheeses, and all your favorite vegetables. Anytime you get sad about choosing not to eat french fries, get a cast iron skillet ripping hot, season a steak with lots of salt and pepper, and sear your way to the perfect medium-rare.