If an imported cheese shop is available to you, try a different firm and flavorful cheese such as manchego or Asiago in place of the Swiss cheese.
Baguettes vary in width. If your baguette is very narrow, you may need 30 slices to hold all of the filling.
The bread can be baked ahead, covered and stored at room temperature. Prepare the crab mixture the day before; cover and refrigerate. Assemble the appetizers just before baking them.
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