Veggie Salad Sandwich

Ingredients

• Sandwich
• 1 foccacia bun
• tzatziki, sauce (your favorite, or see below)
• 1 slice provolone cheese
• 1 slice cheddar cheese
• 1/4 red pepper, sliced
• 1 slice large tomatoes
• 2 rings large red onions
• 1/4 cucumber, sliced
• 1/2 cup mixed greens
• Tzatziki Sauce (make night before for best flavor)
• 1 (6 ounce) container fat free Greek yogurt
• 1/2 cucumber, seeds removed, grated and squeezed so as much liquid as possible is removed
• 1 tablespoon red wine vinegar
• 1 tablespoon extra virgin olive oil
• 2 garlic cloves, minced
• 1/2 teaspoon garlic powder
• salt and pepper, to taste