Blueberry Surprise
["1 stick margarine", "1 1/2 c. graham cracker crumbs", "1/4 c. granulated sugar"]
["Mix ingredients and press 2/3 mixture in bottom of square baking dish.", "(A bowl that has the same diameter top and bottom may be used, 1 1/2 to 2-quart size.)"]
["margarine", "graham cracker crumbs", "granulated sugar"]