Heat a 10 inch cast iron pan or oven safe pan over medium heat on the stove top. Spray the pan with non-stick cooking spray. Add the chopped onions and sauté for 5 minutes or until they are starting to brown.
1 small onion, diced into bite-sized pieces
Add in the chopped bacon and continue to cook for 3-5 minutes until the onions are browned and bacon is cooked through.
6 strips bacon, diced into bite-sized pieces
In a large mixing bowl, whisk together the eggs, Parmesan cheese, plain Greek yogurt, salt, and pepper.
12 eggs, 1/2 cup plain Greek yogurt, 1 cup shredded Parmesan cheese, 1/2 teaspoon salt, 1/4 teaspoon black pepper
Pour the egg mixture over the onion and bacon in the cast iron pan. Do not mix! Over medium heat, cook the frittata on the stove top for 3 minutes.
Place the whole pan in the preheated oven and bake for 15-18 minutes or until the center is just set. Typically, the middle should be not be wet to the touch, but ever-so-slightly jiggly. The frittata doesn't need to be browned on top and will continue to cook even when taken out of the oven as it cools. A good frittata will have a custard like texture and not be over baked.
Top finished frittata with shaved Parmesan, chives, or additional cooked bacon. Store leftovers in an airtight container in the fridge for up to 3 days.
Video
Notes
Ingredient Tips -Turkey bacon can be used in place of regular bacon. If so, spray the pan with additional cooking spray (over the sautéed onions) when adding the turkey bacon to the pan. Feel free to substitute the dairy in this recipe with whatever you have on hand. The most unctuous frittata should be made with full-fat dairy not skim or fat-free. Other whole food substitutions such as sour cream, half & half, heavy cream, or whole milk all work well.