Swiss Chard Frittata

Recipe source: martha stewart living

Preheat oven to 475 degrees f.

In a bowl whisk together first 5 ingredients.

Over medium high heat heat oil in oven-proof skillet.

Stir in swiss chard stalks and onion cooking until onion is tender.

Stir in the sliced leaves and cook stirring another minute or so.

Sprinkle with 1 / 4 teaspoon salt and add the egg mixture , stirring to distribute vegetables evenly.

Place skillet in oven and bake for 10-15 minutes or until eggs are set.

egg, egg whites, part-skim ricotta cheese, kosher salt, pepper, olive oil, swiss chard, onion