![['A close-up side view of a sliced caramelized onion and spinach egg bake, showcasing its fluffy texture and golden edges.', 'A vibrant egg bake with layers of spinach and caramelized onions, highlighting a creamy cheese topping.', 'A detailed view of a savory caramelized onion and spinach egg bake, revealing rich colors and a soft, fluffy interior.', 'A tempting slice of egg bake featuring cooked spinach and sweet onions, served on a plate with a creamy drizzle.']](https://timetocooks.com/wp-content/uploads/2026/08/caramelized-onion-and-spinach-egg-bake_1_U1-300x300.webp)
Caramelized Onion 'n Spinach Egg Bake
A delicious and healthy baked egg dish featuring sweet caramelized onions, fresh spinach, and creamy Swiss cheese, perfect for breakfast or brunch.
Ingredients
Onions
- 3 cups thinly sliced sweet onions
- 1 tbsp. light butter
- 1/4 tsp. salt
Spinach
- 4 cups spinach
Cheese wedges
- 4 wedges The Laughing Cow Light Creamy Swiss cheese
- 1 tsp. chopped garlic
Egg whites or fat-free liquid egg substitute
- 3 cups egg whites or egg substitute
Optional topping
- light sour cream Optional topping: light sour cream
Instructions
- Preheat oven to 375°F (190°C). Spray an 8" x 8" baking pan with nonstick spray.
- Cook onions, butter, and salt in a skillet over medium-high heat until softened, then caramelize for 25-30 minutes. Transfer to a bowl.
- Cook spinach until wilted, then add to the bowl with onions. Mix in cheese and garlic until melted.
- Once cooled slightly, stir in egg whites. Pour mixture into the prepared pan and bake for 50 minutes until set.
Notes
For extra flavor, top with a dollop of light sour cream before serving.