Light Hollandaise Sauce
(courtesy of Cooking Light magazine):
1 1/2 tablespoons cornstarch
1/2 teaspoon dry mustard
2/3 cup 1% low-fat milk
1 large egg yolk
2 1/2 tablespoons fresh lemon juice
1 tablespoon butter
1/8 teaspoon salt
Combine 1 1/2 tablespoons cornstarch and mustard in a 2-cup glass measure. Gradually add milk and egg yolk, stirring with a whisk. Microwave at high 1 minute; stir well. Microwave at high an additional 30 seconds or until thick. Add lemon juice, butter, and salt; stir with a whisk.
I would also suggest using whole wheat English muffins, and replacing 1/2 the eggs (You don't say how many Eggs Benedict you're making) with 1/4 cup of an egg substitute per egg, such as Egg Beaters or Better-N-eggs, which is just egg whites with a bit of food coloring to make it look like whole egg (i.e. for 12 servings. which is how many the Hollandaise recipe will serve, you would use 6 whole eggs and 1-1/2 cups egg substitute). Scramble them together and use a lightly greased egg ring (or a biscuit cutter) to cook them in the correct shape. Unless, of course, you think that might be just WAY TOO healthy!