• 1 1/2- 2 pounds sirloin steak cut into chunks to 1 inch
• 1/2 of a bell pepper seeds removed, cut into chunks to 3/4 inch
• 1/2 of a small red onion cut into chunks to 3/4 inch
• 12 ounces cherry tomatoes or grape tomatoes
• 1 large zucchini cut into rounds

For the souvlaki marinade:

• 2 lemons juiced
• 1/2 cup extra virgin olive oil
• 6 garlic cloves minced
• 3 tablespoons red wine vinegar
• 1 tablespoon dried oregano {or 2 tablespoons fresh}
• 1 teaspoon dried thyme {or 2 teaspoons fresh thyme}
• 1/2 teaspoon paprika
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper

For the tzatziki:

• 1/2 cup Greek yogurt, 2% or whole milk yogurt works best
• 3 garlic cloves minced
• 2 tablespoons extra virgin olive oil
• 1 tablespoon white vinegar
• 2 tablespoons fresh dill chopped
• 2 cups grated cucumber, about 1 small cucumber, squeeze out the excess juice from the cucumber 
• 1/4 teaspoon salt
• dash black pepper