Caramelized Onion & Baby Kale Frittata 🍳

A friend of mine recently suggested a breakfast for dinner so of course I wanted to come up with a decadent and savory option. I landed on this quick frittata with sweet caramelized onions and greens finished with salty feta cheese. Divine!

Ingredients for one 9″ Frittata:

  • 8 Eggs
  • 1/3 Cup Sour Cream
  • Medium Yellow Onion – Sliced into Thin Strings
  • 4 Cups of Baby Kale or Spinach
  • 1 Tbs Apple Cider Vinegar
  • 1/2 Tbs Butter
  • 1/2 Tbs Olive Oil
  • Feta Cheese – About 1/3 cup
  • Salt & Pepper


  1. Preheat oven to 400ΒΊ.
  2. Heat olive oil & butter in skillet over medium heat. Add onion, season with salt & pepper and cover. 
  3. Meanwhile, in a medium bowl, whisk together eggs, sour cream, salt & pepper.
  4. Continue to cook onions, stirring occasionally, until onions are soft and begin to brown then lower heat to medium-low and add apple cider vinegar and greens. Cover and let greens begin to wilt (about 4 minutes). 
  5. Use a wooden spoon to get all of the browning off the bottom of the pan and mixed into the onions & greens. 
  6. Transfer and spread onion & greens into 9” oven safe baking dish and gently pour in egg mixture.
  7. Bake for 20-25 minutes or until the middle of the frittata is set.
  8. Remove from oven and top with feta cheese and chopped uncooked greens. Enjoy!

I hope you give this delicious recipe a try and let me know what you think! 😊

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Published by coryfcooks

Unprofessional Cook, Professional Eater | Living in Florida with my soon to be husband and our French Bulldog, Louis.

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