Poach 2 egg whites using a poaching pan or by following the instructions.
Empty lump crab meat into a bowl, and drain it of any excess water.
To make the Hollandaise Sauce: Start by melting the butter in a small saucepan on low heat. Cook until butter is melted and turns golden in color. Set aside.
In a medium sized saucepan, whisk together ¼ cup of the non-fat buttermilk, cornstarch, salt, and cayenne pepper until smooth and well combined.
Add in the rest of the buttermilk and liquid egg substitute.
Set the pan on medium-low heat, and whisk continuously until it begins to simmer and thicken.
Remove from heat and whisk in the lemon juice and butter.
On a plate, set one toasted English muffin half and top it with ¼ of the total crab meat. Then gently place your poached egg on top.
Top each Crab Eggs Benedict with about ¼ cup of the hollandaise sauce, and garnish with fresh chives.