In this recipe from the River Cottage Fish Book ... Using a spoon, tuck the crab mixture evenly between the slices of bread. In a bowl, whisk the eggs with the milk, half-and-half, 1 teaspoon ...

Add the spinach and cook, tossing, until wilted, about 1 minute. Add the spinach to the mushrooms with the bread, Swiss cheese and 1/2 cup of the Parmesan and toss. Beat the eggs in a small bowl.