I have a scoop of natural casein after my rides. It's a reasonable blend of macros and has more natural ingredients than a lot of the other protein powders I've used. My goal is more recovery and reduction of cravings later in the day and over the next two days from a hard ride. Seems to work well and does not produce a huge insulin spike as with some other faster absorbing powders.
https://www.bodybuilding.com/store/opt/cas.html
Micellar Casein, Cocoa (Processed with Alkali), Natural Flavors, Honey Powder, Evaporated Cane Juice, salt, Lecithin, Cellulose Gum, Reb A (Natural Stevia Leaf Sweetener).
I've also heard very good things about the natural oats and whey but I haven't tried as it has a full serving of carbohydrates and I prefer to get this serving from whole fruits as opposed to powdered oats/fructose powders.
https://www.bodybuilding.com/store/opt/oatsandwhey.html