You'll have to test this. It's coming out of my head and based on what I think might work, adapting one form of granola bars into something less candy-like.
Using the recipe above, add to it:
.5 t baking soda
.75 c evaporated skim milk
4 egg whites
2 T white sugar
Decrease the oil to 3 T
The flow is different:
Spray a 9x11 or 11x13 pan with cooking spray. Heat your oven to 350 (conv).
Mix together the oats, nuts, dried fruit, salt, baking soda and cinnamon in a large bowl. In a small bowl, mix together the honey, oil and evap milk.
In a med bowl, beat the egg whites till just past the soft peak stage then gradually add the sugar, beating, and take to the stiff-and-glossy stage.
Stir the liquid ingredients into the dry. Fold 1/3 the egg whites into the mix to moisten it then fold in the rest, gently.
Spoon the mix into the prepared pan. Bake till a toothpick comes out clean (I'm guessling 30-40 min). Allow to cool somewhat in the pan, score lightly into bar shapes, cool completely, cut into bars.
Flax will add Omegas. Best if ground at the last moment for more availability but not essenstial. Were I using flax, I'd go with the no-egg version and add with the dried fruits after cooking the mix and before pressing. Were I wanting pumpkin or sunflower seeds I'd do the same or, if using the egg version, add with at the beginning, replacing an equal amount of nuts.