French Onion Omelet

Transform your breakfast routine with this decadent French Onion Omelet, a savory fusion of classic French onion flavors and morning-time comfort. This gourmet omelet features golden, caramelized onions cooked to perfection in butter and balsamic vinegar, layered with a melty blanket of shredded Gruyère cheese for a luxuriously rich bite. Fluffy eggs whisked with milk and seasoned with a touch of fresh thyme deliver a light, elegant base, while hints of black pepper bring a touch of warmth to every forkful. With just 30 minutes from start to finish, this recipe is perfect for a cozy weekend brunch or an indulgent solo breakfast. Pair it with crusty bread or a crisp green salad for a meal that feels truly special. Ideal for anyone seeking egg recipes, brunch inspiration, or a French-inspired twist on classic comfort food.

Nutriscore Rating: 64/100

Prep Time:10 mins

Cook Time:20 mins

Total Time:30 mins

Servings: 1

Ingredients

• 2 tablespoons unsalted butter
• 1 teaspoon olive oil
• 1 large yellow onion
• 1 teaspoon granulated sugar
• 1 teaspoon balsamic vinegar
• 3 large eggs
• 2 tablespoons whole milk
• 1 ounce Gruyère cheese, shredded
• 0.5 teaspoons fresh thyme leaves (optional)
• 0.5 teaspoons salt
• 0.25 teaspoons black pepper, freshly ground

Directions

Step 1

Peel and thinly slice the yellow onion into uniform half-moons.

Step 2

In a medium skillet, melt 1 tablespoon of unsalted butter with 1 teaspoon of olive oil over medium heat.

Step 3

Add the sliced onions to the skillet and sprinkle with 1 teaspoon of granulated sugar and a pinch of salt. Stir to distribute evenly.

Step 4

Cook the onions over medium-low heat, stirring frequently, for 15 minutes until golden brown and caramelized.

Step 5

Once caramelized, add 1 teaspoon of balsamic vinegar to the onions, stir well, and cook for another 1-2 minutes. Remove the onions from the skillet and set aside.

Step 6

In a mixing bowl, whisk together 3 large eggs, 2 tablespoons of whole milk, 0.5 teaspoons of salt, and 0.25 teaspoons of black pepper until fully combined and slightly frothy.

Step 7

Wipe out the skillet with a paper towel and return it to the stove over medium heat. Add the remaining 1 tablespoon of unsalted butter and swirl to coat the pan.

Step 8

Pour the egg mixture into the skillet, tilting the pan to distribute the eggs evenly. Let the eggs cook for 1-2 minutes or until the edges begin to set.

Step 9

Reduce the heat to low and sprinkle the shredded Gruyère cheese evenly across the surface of the omelet. Add the caramelized onions on one half of the omelet and sprinkle with fresh thyme leaves, if using.

Step 10

Allow the omelet to cook for an additional 1-2 minutes until the cheese has melted and the eggs are set but not dry.

Step 11

Using a spatula, carefully fold the omelet in half to cover the caramelized onions and cheese. Gently slide it onto a serving plate.

Step 12

Serve hot and enjoy your French Onion Omelet!

Nutrition Facts

Serving size	386.3 grams (386.3g)

Amount per serving	% Daily Value*
Calories	549

Total Fat 39.30g	50%
Saturated Fat 12.40g	62%
Polyunsaturated Fat 1.40g
Cholesterol 592mg	197%
Sodium 1611mg	70%
Total Carbohydrate 24.20g	9%
Dietary Fiber 2.80g	10%
Total Sugars 12.90g
Protein 28.80g	58%

Vitamin D 140IU	698%
Calcium 432mg	33%
Iron 4mg	21%
Potassium 512mg	11%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 62.5%

Protein: 20.4%

Carbs: 17.1%