1. In a small bowl carefully mix in yogurt, raspberries, milk and mint and set aside.
2. In medium bowl combine spinach, mushrooms and sesame seeds and mix well.
3. On 2 individual salad plates arrange spinach mixture evenly; top with red onion rings.
4. Drizzle yogurt dressing over salads and sprinkle with bacon.
5. Garnish with fresh raspberries and mint sprig, if desired.