I am trying to add a little carbs post workout to help restore glycogen
stores, but I am not an endurance athlete and am looking for
recommendations.

I am thinking a banana just before my protein shake (around 50g of
protein), but this still isn't anywhere near the 4 to 1 (carb to
protein) that many recommend. When added to the carbs in the shake I
would be getting around 40 g carbs and 50g protein.

Thoughts?