Spray a 13 x 9-inch pan with cooking spray. Combine corn syrup, sugar and salt in a large saucepan and cook over medium heat, stirring to dissolve sugar until mixture just BEGINS to boil or microwave on high (100%) for 2 to 2-1/2 minutes until syrup bubbles around the edge. When mixture begins to bubble and has a light froth on the surface, remove from heat and add peanut butter; stir until well blended.

Stir in cereal. Pour into prepared pan; pat with greased spatula or waxed paper to level.

Sprinkle with mini chocolate chips, and peanut butter chips if desired; then press down with greased spatula or waxed paper. Cool and cut into squares.