Greek-Style Burgers with Feta Aioli (Suzanne)

Aioli:
1/2 cup crumbled feta cheese
2 tbsp light mayonnaise
2 tbsp plain fat-free yogurt
1/4 tsp pepper
1 garlic clove, minced

Burgers:
1 slice white bread
5 slices red onion (1/2 inch thick)
cooking spray
1 pound ground beef
1/3 cup chopped bottled roasted red bell peppers
1/4 cup chopped fresh parsley
1 tsp dried oregano
1/4 tsp coarsely ground black pepper
1 (10-ounce) package frozen chopped spinach, thawed,drained, and squeezed dry
1 large egg, lightly beaten
2 garlic cloves, crushed
5 sourdough buns
5 lettuce leaves
5 tomatoe slices

1.  Combine first 5 ingredients in a blender or food processor, and process 1 minute or until smooth.
Cover and chill.

2.  Prepare grill or boiler.

3.  To prepare burgers, place 1 bread slice in blender; process until course crumbs form to measure 2/3 cup.  Set aside.  Place onion slices on grill with cooking spray and cook for 2 min on each side.  Set aside.

4.Combine breadcrumbs, beef, and next 8 ingredients in a large bowl.  Divide beef mixture into 5 equal portions, shaping into 1/2 inch thick patties. Cook patties on grill until done.
Spread 1 1/2 tbsp aioli over bottom halves of buns. Place patties on bottom half of bun, top each with one onion slice, lettuce and tomatoe and top half of bun.