The crafting recipe GUI is obviously cut & cropped from the crafting table container texture.
This can be noticed when using detailed textures and/or custom NEI background.

Ideally I'd want textures for each recipe GUI for maximum customizability,
but a JEI like "gui_vanilla.png" texture atlas would be okay too.

Version:

NotEnoughItems-2.5.27-GTNH.jar

The texture is determined by each handler of each mod that adds a tab to nei

I know, what I'm talking about here is the vanilla container textures.

These:

NotEnoughItems/src/main/java/codechicken/nei/recipe/FurnaceRecipeHandler.java

Line 127 in daab313

return "textures/gui/container/furnace.png";

NotEnoughItems/src/main/java/codechicken/nei/recipe/ShapedRecipeHandler.java

Line 153 in daab313

return "textures/gui/container/crafting_table.png";

NotEnoughItems/src/main/java/codechicken/nei/recipe/BrewingRecipeHandler.java

Line 115 in daab313

return "textures/gui/container/brewing_stand.png";