Wash and dry the spinach and mixed leaves, then place them in a large salad bowl.

Add the cherry tomatoes and crumbled feta cheese to the greens.

In a separate bowl, prepare the dressing by combining Greek yogurt, grated cucumber, minced garlic, and a pinch of salt. Mix well.

Drizzle the Greek yogurt dressing over the salad ingredients.

Toss the salad gently to coat all the ingredients with the dressing.