Lentil Burgers with Tzatziki

Ingredients

• 12  arugula leaves 
• 0.3 teaspoon pepper black freshly ground
• 0.5 cup carrots grated
• 0.1 teaspoon pepper red crushed
• 0.7 cup lentils dried
• 1 cup cucumber english grated peeled
• 1.5 cups less-sodium chicken broth fat-free
• 2.5 ounces feta cheese crumbled
• 0.3 cup flat-leaf parsley fresh chopped
• 2  garlic cloves crushed
• 2  garlic cloves minced
• 0.3 cup green onions chopped
• 0.3 cup italian-seasoned breadcrumbs 
• 3 tablespoons kalamata olives pitted chopped
• 1.5 cups yogurt plain low-fat
• 1 teaspoon olive oil extra-virgin
• 2 teaspoons olive oil 
• 1 cup onion chopped
• 0.8 teaspoon oregano dried
• 0.5 teaspoon salt 
• 0.3 cup sun-dried tomato sprinkles 
• 2  tomatoes cut into 1/4-inch-thick slices ( 3/4 pound)
• 0.3 cup wheat germ toasted
• 1.5 ounce hamburger buns whole wheat toasted

Equipment

• food processor
• bowl
• frying pan
• paper towels
• sauce pan
• ziploc bags
• wax paper
• spatula

Directions

1. To prepare tzatziki, place cucumber on paper towels, and squeeze until barely moist.
2. Place in a medium bowl. Spoon yogurt onto several layers of heavy-duty paper towels; spread to 1/2-inch thickness. Cover with additional paper towels, and let stand for 5 minutes.
3. Scrape into bowl using a rubber spatula.
4. Add the salt, crushed garlic, green onions, and extra-virgin olive oil; chill.
5. To prepare patties, heat 2 teaspoons oil in a medium saucepan over medium-high heat.
6. Add onion; saut 2 minutes or until tender. Stir in oregano, red pepper, and garlic; cook for 30 seconds, stirring constantly. Stir in broth, lentils, and sun-dried tomatoes; bring to a boil. Cover, reduce heat, and simmer 35 minutes or until lentils are tender; drain. Cool.
7. Place lentil mixture, cheese, and the next 6 ingredients (cheese through black pepper) in a food processor; pulse until coarsely ground. Divide lentil mixture into 8 equal portions, shaping each into a 1/2-inch-thick patty.
8. Heat a large nonstick skillet coated with cooking spray over medium-high heat.
9. Add patties, and cook for 3 minutes. Turn patties over, and cook over medium heat 3 minutes.
10. Spread 1 tablespoon tzatziki evenly on each bun top and bottom. Arrange the arugula, patties, and tomato slices over bottom halves of buns; top with remaining bun halves.
11. Note: You can freeze any uncooked lentil patties for up to 1 month: Separate the patties with wax paper, place in a heavy-duty zip-top plastic bag, remove excess air, seal, and freeze. Thaw in refrigerator before cooking.