I think I have every Chex Mix recipe known to man.

You
may want the Maple Nut Party Mix recipe, as it does not call for popcorn. However, there is also the Popcorn Caramel Crunch recipe...you could just skip the popcorn. They're similar, but I think the 2nd one is more like caramel corn. Anyway...
Maple Nut Party Mix
4 Tbl butter (NOT spread or tub products)
4 Tbl oil
1/3 c brown sugar
2 tsp maple extract or pancake syrup
8 c Chex cereal (any variety)
1 c honey roasted cashews & peanuts
Heat oven to 225. Melt butter in large roasting pan. Stir in brown sugar & maple extract. Gradually stir in cereal & nuts, stirring until evenly coated. Bake 45 minutes, stirring every 15 minutes. Spread on waxed paper to cool.
Microwave directions:
In large bowl, melt butter on High 30 - 45 seconds. Stire in brown sugar & maple extract. Gradually add cereals & nuts, stirring until all pieces are evenly coated. Microwave on High 6 minutes, stirring every 2 minutes.
Popcorn Caramel Crunch
1½ c Corn Chex
1½ c Rice Chex
1½ c Wheat Chex
4 c air-popped popcorn
¼ c margarine (can substitute diet)
6 Tbl brown sugar
2 Tbl light corn syrup
¼ tsp vanilla
Preheat oven to 250. Combine cereals & popcorn in an open roasting pan; set aside. In a saucepan, combine margarine, sugar, corn syrup & vanilla. Cook over medium heat 5 min or until boiling; stir frequently. Pour hot mixture over cereal, stirring until all pieces are evenly coated. Bake 45 min, stirring every 15 min. Spread on wax paper to cool. Store in an airtight container.