Mod file: fabric-romod-1.19.2-1.2.2.jar
Minecraft version: 1.19.2
CurseForge Overwolf profile based upon "Better MC [FABRIC]", though I've added a bunch of additional mods (and disabled a few that came with it).

I do not see a crafting recipe in REI. Trying all possible combinations of 5 iron ingots and one netherite ingot in the standard iron bars recipe does not work.

I - N - I
I - I - I

I also experimented with combining iron bars or iron blocks with netherite ingot in anvil and smithing table.

Currently, REI shows that I must uncraft the reinforced obsidian or reinforced glass from this mod to make the reinforced iron bars. (The mod pack has Twilight Forest, which has an uncrafting table.)

Is there a different recipe?
I have the Polymorph (Fabric) mod also installed, so recipe conflicts ought to give me an option to select the result I want.

I missed a recipe error! Thanks for pointing it out. The recipe is indeed what you thought it was.

Should be fixed on version 1.19.2-1.2.3. If it's not up on CurseForge, you can find it here on GitHub.