Husband and I are moving out west and will be driving from Ann Arbor to Portland in early August. Our route is basically I-94 with a detour through Dubuque and Decorah, then to I-90 with a short detour into Yellowstone. Nights in Decorah, Minneapolis, Bismarck, Yellowstone, and Missoula. Any recommendations for some really tasty Midwest fare? Bonus points for good pie!