Spinach Salad with Hot Portabella Dressing INGREDIENTS 1 large Modern portabella mushroom, cleaned and trimmed (about 8 ounces) 1 package (10 ounces) baby spinach leaves, trimmed, rinsed and drained (about 6 cups) 1 large sweet yellow or red bell pepper, chopped (about 1 cup) 8 cherry tomatoes, halv...