Step 1

Place rack in the center of your oven and preheat oven to 350 degrees F. Lightly coat a 9-inch pie dish with cooking spray.

Step 2

If your chicken is not yet cooked: Cook and shred chicken.

Step 3

Heat the olive oil in a large skillet over medium heat. Add the broccoli and peppers and sauté until they are beginning to soften, about 5 minutes. Add the green onions, garlic, salt, and pepper and cook 1 additional minute. Remove from heat and set aside.

Step 4

In a large bowl, whisk together the eggs, then add cheese, chicken, and the vegetables from the skillet. Stir to combine, then pour into the prepared pie dish.

Step 5

Bake 40 minutes, until the center is nearly set and a toothpick inserted comes out clean. Remove and let sit 5 minutes then serve warm or at room temperature. The frittata will puff while baking, then settle a bit as it cools.