This unusual, very inexpensive, quick, and easy dip or sauce uses whole wheat toast crumbs and walnuts for body. The flavor comes from our favorite--garlic, lemon juice and olive oil. It can be used as a sauce for fish or spooned over slices of fresh mozzarella and tomatoes. Serve it in a small bowl surrounded by red pepper and zucchini strips. Top it with chopped toasted walnuts or parsley. Imagine you are in Greece!