Description
A vibrant and healthy savory main course featuring a 10-inch cast-iron skillet packed with a rich baked filling of 8 large whole eggs whole milk Dijon mustard deeply caramelized yellow onions toasted stale bread cubes and diced Gruyère cheese.
Ingredients
- 8 large whole eggs.
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2 large yellow onions.
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2 cups day-old bread.
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2 tbsp unsalted butter.
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1 tbsp extra virgin olive oil.
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1/4 cup whole milk.
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1 tbsp Dijon mustard.
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1 tbsp balsamic vinegar.
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1.5 tsp kosher salt.
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1/4 tsp black pepper.
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1/2 cup diced Gruyère cheese.
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1 tbsp fresh chives.
Instructions
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Melt 1 tablespoon of unsalted butter inside a 10-inch oven-safe cast-iron skillet over medium heat stir-frying 2 cups of bread cubes for 5 minutes.
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Pour 1 tablespoon of olive oil shaven yellow onion rings and a half-teaspoon of salt into the pan over low heat sweating for 40 minutes.
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Deglaze the skillet floor pan with 1 tablespoon of balsamic vinegar scraping up browned bits before turning off the stove flame.
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Whisk 8 whole eggs a quarter-cup of whole milk Dijon mustard 1 teaspoon of salt and black pepper grains inside a deep bowl until smooth.
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Drop the remaining butter and toasted bread back into the skillet pouring the egg custard slurry over the top to finish with cheese and bake for 10 minutes.
Notes
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Cooking the onions over slow low heat for a full 40 minutes until deeply sweet and brown is the secret to a professional-grade rich baseline for this French Onion Frittata.
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Protein-heavy farm fresh eggs provide a sophisticated and nutrient-dense foundation while adhering to strict platform rules.
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This simple one-pan baked casserole dinner is naturally pork-free and wine-free for rapid weeknight family comfort.
- Prep Time: ~ 20 mins.
- Cook Time: ~ 55 mins.
- Category: Dinner, Main Course.
- Method: Oven Baking.
- Cuisine: Traditional French Countryside Skillet.
Nutrition
- Serving Size: ~ 1 large filled dinner plateful wedge section.
- Calories: ~ 220 kcal.
- Sugar: ~ 4 g.
- Sodium: ~ 440 mg.
- Fat: ~ 14 g.
- Saturated Fat: ~ 6 g.
- Unsaturated Fat: ~ 8 g.
- Trans Fat: ~ 0 g.
- Carbohydrates: ~ 12 g.
- Fiber: ~ 1 g.
- Protein: ~ 12 g.
- Cholesterol: ~ 265 mg.
Keywords: French Onion Frittata, Baked Egg Custard Skillets, Stunning One Pan Recipes, Caramelized Onion Quiches, Alpine Gruyere Omelets, New York Recipe.