Preheat the oven to 350°F. Lightly grease a 9×13 baking pan and set aside.
In a medium saucepan, melt the caramels and the evaporated milk, stirring until smooth.
In a medium bowl, mix together the flour, oats, sugar, baking soda and salt. Mix in the butter until fully incorporated. Press half of the mixture into the prepared baking pan. Set the rest aside.
Place the baking pan in the preheated oven, and bake for 8 minutes. Remove and sprinkle with the chocolate chips and pecans. Pour the caramel mixture over top, then sprinkle the remaining oat mixture over that.
Return to the oven, and bake for an additional 12 minutes, or until the top is golden brown. Remove from oven and allow to cool. Cut into squares.