Ingredients
1/2
medium cucumber, peeled, seeded and shredded
1
container (8 oz) plain yogurt
4
medium green onions, chopped (1/4 cup)
1
clove garlic, finely chopped
1
tablespoon olive oil
1
teaspoon lemon juice
1/4
teaspoon salt
1
lb lean (at least 80%) ground beef
1/2
cup frozen chopped spinach, (thawed) squeezed to drain
1/3
cup crumbled feta cheese
1/4
cup finely chopped red onion
2
cloves garlic, finely chopped
1/2
teaspoon salt
1/4
teaspoon pepper
8
whole wheat hamburger buns, split
2
medium tomatoes, sliced
4
leaves romaine lettuce, torn in half
Preparation
Place shredded cucumber in clean dish towel; squeeze to remove any excess liquid. In small bowl, mix cucumber and remaining sauce ingredients. Cover; refrigerate until serving time.
Heat gas or charcoal grill. In large bowl, mix all burger ingredients except buns, tomatoes and lettuce. Shape into 8 patties, 1/4 inch thick. Place patties on grill over medium heat. Cover grill; cook 5 to 8 minutes, turning once, until meat thermometer inserted in center of patties reads 160°F.
Spoon 2 tablespoons sauce on bottom half of each bun. Top with burger, tomato and lettuce. Cover with top halves of buns.