In large microwavable bowl, microwave butter on High 50 to 60 seconds or until melted. Stir in brown sugar and corn syrup until blended. Beat in salt, vanilla and eggs. Stir crushed granola bars, walnuts, oats and baking chips into brown sugar mixture. Pour into crust-lined pan. Cover edge of crust with 2 to 3 inch strip of foil to prevent excessive browning; remove foil last 15 minutes of baking.