A hearty, inexpensive dish.
4 slices of bread will give you about the amount of crumbs you need. You can use white or whole-wheat (brown) bread, though whole-wheat gives a more robust taste. For the cream, use a light cream such as half and half, coffee cream or single cream. You could even get away with milk, provided it's not skim milk. If using milk, just allow a few more minutes of cooking time for the custard to set. For the cheese, you can use a Gouda instead of the cheddar. You'll need 1 oz (30g) for the crust and 2 oz (60g) for the filling. The dried herbs of basil and oregano are just suggestions. You could try others such as parsley, thyme, rosemary.