I believe you have to try and stick to approximate 4:1 (carb:protein) or 3:1 ratio to maximize recovery effects. Timing is just as important. Example article (citing academic sources):
For every 100g of peanut butter you get:
- 50g fat
- 25g protein
- 20g carbohydrate
Which means the ratio is way off, and you get a ton of calorie-dense fat that might not help you (it can slow down digestion which is not what you want for recovery purposes).
Some other posts from the forum:
- Recovery Drinks - 4:1 Carb / Protein Ratio - #8 by ambermalika
- Recovery Drinks - #42 by FoodC (includes a peanut-butter based smoothie recipe by @FoodC.