Berries are an excellent post-workout carb source. They're generally low in fructose, so you get a proper insulin spike if you eat enough of them. They are bursting with antioxidants which are great for damaged muscle tissue. They go down easy even if you're not that hungry. Blueberries, strawberries, raspberries, and blackberries dipped in cinnamon are my favorites.
Whey protein will also give you a decent insulin spike, but I've had better results since I gave up the whey in favor of slower-releasing protein from meat. Grass-fed beef liver with green veg and berries for dessert is the best post-workout meal I've found so far.