Asparagus Frittata

For 4 servings

Ingredients

 * 2 teaspoons olive oil
 * 1 small onion, thinly sliced
 * ½ teaspoon salt
 * 1 pound asparagus, tough ends snapped off, spears cut diagonally into 1-inch lengths
 * 4 large eggs, lightly beaten
 * 1 cup shredded gruyere or swiss cheese

Directions

 * 1) Heat olive oil into a 10-inch oven-proof frying pan over medium high heat.
 * 2) Add onions and salt and cook, stirring occasionally, until onions are softened, about 3 minutes.
 * 3) Add asparagus, reduce heat to medium-low, and cook, covered, until the asparagus are barely tender, 6 to 8 minutes.
 * 4) Pour in eggs and cook until almost set, but still runny on top, about 2 minutes.
 * 5) While cooking, pre-heat oven broiler.
 * 6) Sprinkle cheese over eggs and put in oven to broil until cheese is melted and browned, about 4 minutes.
 * 7) Remove from oven with oven mitts and slide frittata onto a serving plate.
 * 8) Cut into wedges.