1 large butternut squash 2 carrots 3 stalks of celery 1 large onion 5 cloves of garlic 6 sage leaves 6 sprigs of thyme 1 sprig of rosemary ¼ tsp. cayenne red pepper powder salt and pepper to taste 2 tbsp.
Big or small, portobello mushrooms make the perfect grilled burger. Portobellos meaty texture and rich, robust flavor take on the flavors of marinades and rubs and stay juicy and tender when grilled. The onion topping can be made up to two days ahead.