If the recipe calls for 1 cup All Purpose Flour, how many cups of Quinoa flour should I use to completely replace All-Purpose flour?
If you want to replace 100% of gluten containing flour in a recipe, you will probably need to vary the amounts of the other ingredients, the cooking time and the cooking temperature. It doesn’t behave the same as gluten containing flours in the oven.
Every recipe is different, but some very general rules of thumb are (for which there are probably just as many exceptions – I know, it's so annoying. But look on the bright side: Grain and gluten free living will certainly keep your creative side ticking):