Spring time means picnic season, and what better way to celebrate than to stock up on great sandwich ideas? -Grilled zucchini, eggplant, and onion with tomato and fresh basil or pesto -Shredded chicken (leftovers) with avocado, sprouts, and tomato -Grilled portobello with caramelized onions, fresh mozzarella, and balsamic glaze -Sliced apples with brie and arugula …