Blueberry waffle recipe ?

i'm trying to find a simple blueberry waffles recipe but the ones i find say seperate the eggs, that is what i don't know how to do -- but i have the liquid egg whites that come in the carton. how much liquid egg whites would i need from that carton to make blueberry waffles?Blueberry waffle recipe ?
BLUEBERRY WAFFLES





1 egg, separated


2 tbsp. sugar


1 c. all-purpose flour


1 1/2 tsp. baking powder


3 tbsp. melted butter


1 c. blueberries


1/2 tsp. salt


2/3 c. milk





Mix and sift the flour, baking powder, salt and sugar. Combine milk and well-beaten egg yolk and add to the dry ingredients. Add melted butter and mix well. Fold in the blueberries and well-beaten egg white. Bake on a hot waffle iron and serve with Blueberry Topping. Makes 4 large waffles.





BLUEBERRY TOPPING:





1/2 c. sugar


1/8 tsp. nutmeg


1/2 tbsp. cornstarch


2 c. blueberries


1 or 2 tsp. lemon juice


Few grains salt





Mix sugar, nutmeg, cornstarch, and salt in saucepan. Stir in 1/2 cup cold water gradually to make a smooth mixture. Add blueberries. Cook over low to moderate heat until sauce is thickened and clear, stirring constantly. Stir in lemon juice. Cool


Blueberry waffle recipe ?
BLUEBERRY WAFFLES





1 egg, separated


2 tbsp. sugar


1 c. all-purpose flour


1 1/2 tsp. baking powder


3 tbsp. melted butter


1 c. blueberries


1/2 tsp. salt


2/3 c. milk





Mix and sift the flour, baking powder, salt and sugar. Combine milk and well-beaten egg yolk and add to the dry ingredients. Add melted butter and mix well. Fold in the blueberries and well-beaten egg white. Bake on a hot waffle iron and serve with Blueberry Topping. Makes 4 large waffles.





BLUEBERRY TOPPING:





1/2 c. sugar


1/8 tsp. nutmeg


1/2 tbsp. cornstarch


2 c. blueberries


1 or 2 tsp. lemon juice


Few grains salt





Mix sugar, nutmeg, cornstarch, and salt in saucepan. Stir in 1/2 cup cold water gradually to make a smooth mixture. Add blueberries. Cook over low to moderate heat until sauce is thickened and clear, stirring constantly. Stir in lemon juice. Cool.