Heat oven to 350F. In an 8 or 9-inch square pan, combine oats and nuts. Bake 20 minutes or until oats are golden brown, stirring occasionally. Meanwhile, stir butter, brown sugar and honey together in medium saucepan. Cook over medium heat until mixture boils.
Measure raisins, banana chips and cereal squares into large bowl. Add toasted oats and nuts. Pour cooked mixture over all and toss to coat thoroughly. Generously butter same square pan. Press mixture firmly and evenly into bottom of pan. Cool. Cut into 2-inch square bars.