A great dessert for catering. These delicious bars also freeze well.
Combine butter, flour, sugar, corn starch with mixer using flat paddle until well blended. Spray half sheet tray with cooking spray. Spread or pat crust out to an even thickness. Bake at 325ºF for 18 to 22 minutes or until lightly browned.
Beat eggs, corn syrup, sugar, butter, salt and vanilla with mixer using flat paddle until smooth. Stir in pecans and chocolate chips. Pour into hot crust.
Bake 25 to 30 minutes or until center appears set. Cool completely, about 2 hours, before cutting in bars.