Grilled Veggie Sandwich          
 

1 (1 pound) loaf focaccia bread
1/4 cup mayonnaise
3 cloves garlic, minced
1 tablespoon lemon juice
1 small yellow squash, cut horizontally into 3/8 inch thick
1 small zucchini, sliced
1 red onion, sliced
1 cup sliced red bell peppers
1/2 cup crumbled feta cheese
1/8 cup olive oil

In a small bowl, combine mayonnaise, minced garlic, and lemon juice.
Set aoli sauce aside in the refrigerator.

Preheat the grill for high heat. Brush vegetables with olive oil on each side. Brush grate with oil. Place bell pepper and zucchini  pieces closest to the middle of the grill, and set onion and squash  pieces around them. Cook for about 3 minutes, turn, and cook for  another 3 minutes. The pepper may take a bit longer. Remove from  grill, and set aside.

While the vegetables are cooking, cut foccaccia into 4 slices. Spread aoli sauce evenly over top, and sprinkle with feta cheese.  Place on the grill, and cover with lid for about 2 to 3 minutes.
Watch carefully so the bottom doesn't burn. This will warm the bread, and slightly melt the cheese. Remove from grill, and layer two pieces with vegetables. Cover with remaining bread. Serve warm.