Identify your recipe job: baking (needs structure) or thickening (needs fat/solids).
Choose the closest match from the list and use the listed ratio (e.g., ¾:1 for almond/cashew flour).
If your substitute looks coarse or clumps, sift once to improve texture and prevent gritty results.
For wet batters, add small splashes of water/milk only if the dough feels dry and crumbly; for thick sauces, simmer 1–2 minutes to activate thickening.
Taste and fine-tune peanut flavor by adding a small amount of peanut extract or extra nut flour next time.