Identify your use: melting (baked/gratin) vs. slicing (platter). Choose the closest match to the melt behavior first.
Use the listed 1:1 ratio, then adjust thickness: aim for a layer thickness that melts within your recipe’s bake time.
If the substitute is softer/looser than reblochon, reduce spread by using smaller pieces or slightly thicker slices.
Taste for salt and aroma: if it’s stronger (Munster/Camembert), pair with milder ingredients or reduce the amount slightly.
For best melt, bring the cheese closer to room temperature before baking (about 10 minutes) and watch closely near the end.