Makes 16 bars
For crust & topping:
For caramel filling:
Preheat the oven to 350 F. Butter an 8-inch square baking pan and line the bottom and sides with parchment paper.
In a bowl, mix together the flour, oats, sugar, brown sugar, salt, baking soda and nuts. Mix in the melted butter until the oat mixture is thoroughly combined. Press two-thirds of the mixture in an even layer on the bottom of the pan. Use the back of the spoon to firmly press & compact the mixture. Bake crust for 20 minutes.
While crust is baking prepare caramel filling. In a saucepan over low heat, melt together caramels and cream until smooth, about 5 minutes. Let cool slightly. Remove crust from oven and let cool on rack for 5 minutes. Sprinkle crust with chocolate chips and cover with caramel sauce. Top with remaining crumb mixture.
Bake for 20-25 minutes until golden. Transfer the pan to a rack and let cool completely. Store bars in an airtight container at room temperature for up to a week.