Portabello Burger

• 1/2 cup olive oil (approx.)
• 3 dashes balsamic vinegar (approx.)
• 1 handful rosemary, thyme, basil, or sage (depending on what we happen to have on hand)
• 2-3 cloves minced
• 1 pinch salt and pepper
• 2 portabello mushrooms
• 1 onion, diced
• 1 pat butter
• 1 handful sundried tomatoes, cut into smallish pieces(optional)
• 2 good sandwich bread (we like par-baked sandwich rolls from Trader Joe's or Fresh Direct)

1. . Mix together the oil, vinegar, 2 cloves of garlic, and spices in a bowl large enough to fit both mushrooms. Marinate for about a half an hour, flipping about halfway through.
2. Toward the end of marination, preheat the oven to about 250 degrees. Sautee onion and garlic in olive oil until translucent, about 5-10 minutes.
3. Sautee mushrooms, smooth side down, with the garlic and onion. Pour the rest of the marinade into the "fin" side of the mushrooms. Sautee for about 2 minutes per side. Transfer mushrooms to oven and bake for 20 minutes.
4. Add butter and sundried tomatoes to pan with the garlic and onions to create a saucy mixture to serve over the mushrooms. Serve on nice rolls with a flavored mayo and/or a sharp cheese.

olive oil, balsamic vinegar, handful rosemary, salt, portabello mushrooms, onion, butter, handful sundried tomatoes, bread

Taken from food52.com/recipes/11037-portabello-burger (may not work)