Baking the sugar-coated tortillas at 400ºF (204ºC) has multiple benefits. The soft tortillas dry quickly in the high heat. The elevated temperature melts the sugars so that they harden and become brittle for a snappy texture. Cooking the sugars also develops a better flavor, as caramel notes emerge when the sugar reaches 320 to 350ºF (160 to 177ºC). The chips only bake for 10 minutes so that the sugars don't burn in the oven.