California Grilled Veggie Sandwich

Details

Ingredients

• ¼ cup mayonnaise
• 3 cloves garlic, minced
• 1 tablespoon lemon juice
• ⅛ cup olive oil
• 1 cup sliced red bell peppers
• 1 small zucchini, sliced
• 1 red onion, sliced
• 1 small yellow squash, sliced
• 2 (4-x6-inch) focaccia bread pieces, split horizontally
• ½ cup crumbled feta cheese