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Hero shot of Keto Onion Breakfast Casserole freshly baked.

Keto Onion Breakfast Casserole

This Keto Onion Breakfast Casserole combines savory caramelized onions with creamy eggs and bacon for the perfect low-carb breakfast.
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Course Breakfast
Cuisine Keto
Servings 4 servings
Calories 400 kcal

Equipment

  • - Oven
  • Casserole dish
  • Frying pan
  • - Mixing bowls
  • - Whisk

Ingredients
  

Main Ingredients

  • 6 eggs large
  • 1 cup heavy cream
  • 1 onion large, thinly sliced
  • 1 cup shredded cheddar cheese
  • 1/2 cup cooked bacon crumbled
  • 1 tbsp olive oil
  • 1/4 cup chopped fresh parsley
  • Salt and pepper to taste

Instructions
 

  • In a frying pan over medium heat, add the olive oil and sliced onions. Cook the onions until they are caramelized, about 10–15 minutes.
  • Preheat your oven to 350°F (175°C).
  • In a large mixing bowl, whisk together the eggs and heavy cream. Season with salt and pepper to taste.
  • Place the caramelized onions into a casserole dish. Add crumbled bacon and half of the cheese. Pour the egg mixture over and top with the remaining cheese.
  • Bake in the preheated oven for 25–30 minutes, until the top is golden and firm.

Notes

Store leftovers in an airtight container in the fridge for up to five days. Freezes well for longer storage.
Keyword Breakfast, Keto, Low Carb