Summer Squash Casserole

Ingredients:

• 6 yellow or pattypan summer squash
• 1 cup onions, chopped
• 1 clove garlic, minced
• 1/4 cup fresh parsley, chopped
• 1/2 stick butter
• 2 slices white bread
• 1 medium bowl ice water
• 1 egg
• Salt and pepper
• 1 cup cracker crumbs, or enough to cover casserole