Preheat oven to 350 degrees. Coat 9 holes of a muffin tin with cooking spray.
In a medium bowl, beat eggs, egg whites, water, salt and pepper until well blended. Stir in remaining ingredients and mix well.
Fill muffin holes about 2/3 full. Bake until just set, about 20 - 22 minutes. Cool in pan on a wire rack for about 5 minutes. Loosen edges using a rubber spatula, then use spatula to slide under frittatas to remove.
Serve with side of fresh fruit for a beautiful brunch. Each frittata = 2 WW Pts+.