Warm Spinach Salad with Shiitake Mushrooms and Red Onion Recipe

Ingredients For Warm Spinach Salad with Shiitake Mushrooms and Red Onion Recipe

• 0.5 cup White balsamic vinegar
• 2 teaspoon Sugar
• Kosher salt and freshly ground pepper
• 1 Small red onion, thinly sliced into rounds
• 2 pound Spinach, tough stems removed, thoroughly washed and drained
• 0.5 cup Extra virgin olive oil
• 1 pound Shiitake mushrooms, stemmed and halved, or sliced if large
• 0.25 cup Sesame seeds, toasted