Nutrition:

Serving Size: 1 serving (340.3 grams)
Calories per serving: 300
Calories from fat: 187
Total Fat: 20.8 g
Saturated Fat: 5.6 g
Trans Fat: 0.0 g

Cholestorol: 20 mg

Sodium: 1160 mg
Potassium: 646 mg
Total Carbohydrates: 11.2 g
Dietary Fiber: 4.2 g
Sugars: 5.5 g 
Protein: 21.6 g 

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Ingredients:

• 2 tablespoons olive oil

• 1 red pepper, chopped

• 1 green pepper, chopped

• 1/4 yellow onion, chopped

• 1 teaspoon kosher salt

• 1 teaspoon black pepper

• 8 egg whites (either separated or in a carton)

• 1/2 cup feta cheese, crumbled

• 2 cups fresh spinach

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Directions:​

1. Preheat the oven to 375°F.

2. In a heavy skillet, add olive oil and bring to medium-low heat.

3. Saute onions and peppers until vegetables are tender, about 7 minutes.

4. Sprinkle the mixture with salt and pepper.

5. Pour egg whites into the skillet and cook for 3 minutes.

6. Sprinkle the top with feta and spinach.

7. Put skillet in oven and bake, uncovered, for 8 to 10 minutes. (If you use whole eggs instead of egg whites, bake at 400°F.)

8. Loosen the edges of the frittata with a rubber spatula, and then invert onto a plate.

Original Recipe: PopSugar Fitness