Greek Lamb Wraps

Ingredients

• 1 cup unpeeled cubed cucumber
• 1/2 cup reduced-fat sour cream
• 2 teaspoons red wine vinegar
• 1/3 cup crumbled feta cheese
• 1/4 teaspoon fresh ground black pepper
• 1/8 teaspoon dried mint flakes
• 1 lb lean boneless leg of lamb, cub into 1/4 inch slices
• 1 onion, cut into quarters and thinly sliced
• 1 teaspoon all purpose Greek seasoning
• 4 (8 inch) flour tortillas
• 1 large tomatoes, thinly sliced
• 1 cup packed baby spinach leaves