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spinach frittata in a cast iron skillet with gray napkin

Spinach Frittata Recipe

Spinach Frittata bursting with flavors is a healthy breakfast.
Course Breakfast, brunch
Cuisine American
Prep Time 10 minutes
Carmelizing Onion Time 10 minutes
Servings 6
Calories 172kcal
Author Amy


  • 8 large eggs
  • 1/2 cup milk I used whole
  • 3 cups spinach chopped chopped
  • 1 large large onion diced
  • 1 pepper diced
  • 2 tbs butter
  • salt and pepper
  • 1/2 cup shredded cheese I used a white cheddar. You can always add more


  • In a large skillet (mine is a 12 inch cast iron), place butter, onions, and a dash of salt on low to medium heat. We are trying to caramelize the onions so this takes quit awhile. This also gives it a much richer flavor. If you don't have a ton of time than just saute until soft.
    caramelizing onions in a cast iron skillet for spinach frittatas
  • While the onions are cooking, rough chop the spinach, grate the cheese (if not using pre-grated cheese), and dice the pepper.
  • Preheat oven to 400 degrees.In a large bowl, crack the eggs and whisk in the milk, salt, and pepper.
  • After the onions are pretty caramelized add in the green peppers and cook until softened.
  • Add in the spinach and stir until wilted.
    wilted spinach with green peppers and onions in a cast iron skillet for spinach frittata
  • Pour egg and milk mixture into pan and allow to cook for 3-4 minutes mixing the eggs with the spinach and pulling the spinach up to the top.
    cast iron skillet with eggs, spinach, green peppers and topped with cheese for a spinach frittata
  • Top with cheese and bake in the oven for 15-20 minutes until completely cooked.
  • If you want it to be a little browner, pop it into under the broiler for 2-3 minutes. Allow to cook for a few minutes, and serve.


Serving: 1g | Calories: 172kcal | Carbohydrates: 4g | Protein: 10g | Fat: 12g | Saturated Fat: 5g | Cholesterol: 237mg | Sodium: 197mg | Potassium: 235mg | Sugar: 2g | Vitamin A: 1940IU | Vitamin C: 6mg | Calcium: 124mg | Iron: 1.5mg