I often make this to finish up French bread that’s going stale, as I only have to buy some cheese, the rest of the ingredients being at hand in my pantry at all times. Comté is the original cheese used, but can be substituted with emmental, gruyère, cheddar or anything similar! This soup freezes well – as a matter of fact you can freeze the prepared ramekins. What I do is consume one freshly made and keep the other three in the fridge, for the next three days, so I only have to heat them in the oven.