What to do with trail mix?

Take out the m&ms. Process the other ingredients in a food processor, adding more dates, or dried cherries, to get a good, rollable consistency - along the lines of these (excellent) date cashew balls: https://food52.com/recipes/30743-apricot-date-and-cashew-snack-balls I make these regularly, substituting different kinds of nuts and dried fruit for variety. They hold in a tightly lidded container for at least 2 weeks. ;o)

Mix with oats, honey/maple syrup, some oil or butter, and bake into trail mix bars. Great to wrap and freeze, or tuck in your purse and have along for an emergency snack!

Bake it in something where the salt will be balanced by other flavors.
And reduce or omit any salt in the original recipe, to bring total salt levels in the dish down to acceptable level.
Ideas:
▪ Energy bar (with oats or other whole grain)
▪Rice pudding, sweet or savory
▪Noodle pudding, sweet or savory
▪Divide into quarter or half cup portions and freeze. Then use (sparingly) in banana or other quick breads instead of the raisins or nuts the recipe calls for.
▪Add to some Indian rice preparations for crunch, protein and touch of sweetness. There, the spices and fat will dominate the flavor profile & the salt will be a minor note.

I would make Nigella Lawson's Breakfast Bars,
https://www.nigella.com/recipes/breakfast-bars

I think the saltiness would work really nicely with the sweetened condensed.

If the salt is an issue, you could try rinsing the mix off with water and then spreading it on a baking pan and drying it off in the oven.

i would take out the m&m's and mix it into a bowl of oatmeal.

I would mix it into cookie dough, in place of chocolate chips, nuts, etc: https://food52.com/recipes/64535-my-classic-best-chocolate-chip-cookies