Onion Quiche Crustless
Perfect for brunch or a light dinner, this Crustless Onion Quiche is an irresistible combination of caramelized onions, creamy Gruyère cheese, and a rich custard base—without the fuss of a crust. Golden, tender onions are slow-cooked to perfection, infusing the dish with a deep, savory sweetness, while fresh thyme and a touch of black pepper add subtle layers of flavor. With just 15 minutes of prep and no need to fuss with dough, this gluten-free quiche is as easy to make as it is delicious. Serve it warm or at room temperature for a comforting, elegant meal that’s sure to impress.
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Recipe Information
Ingredients
- 2 tablespoons Unsalted butter
- 3 medium Yellow onions
- 4 large Eggs
- 1 cup Milk
- 0.5 cup Heavy cream
- 1 cup Shredded Gruyère cheese
- 2 tablespoons All-purpose flour
- 1 teaspoon Fresh thyme leaves
- 0.5 teaspoon Salt
- 0.25 teaspoon Black pepper
Instructions
Preheat your oven to 350°F (175°C). Grease a 9-inch pie dish or quiche pan with cooking spray or a thin layer of butter.
Peel and thinly slice the yellow onions into half-moons.
In a large skillet over medium heat, melt the butter. Add the sliced onions and cook, stirring frequently, until they are golden and caramelized, about 15-20 minutes. Remove from the heat and set aside to cool slightly.
In a large mixing bowl, whisk together the eggs, milk, and heavy cream until smooth.
Sprinkle the flour over the egg mixture and whisk until well combined and no lumps remain.
Stir in the shredded Gruyère cheese, fresh thyme, salt, and black pepper. Mix well.
Add the cooled caramelized onions to the egg mixture and gently fold them in until evenly distributed.
Pour the quiche mixture into the prepared pie dish, spreading it out evenly.
Bake in the preheated oven for 40-45 minutes, or until the top is golden brown, the edges are set, and the center is just slightly jiggly.
Remove the quiche from the oven and let it rest for 10 minutes before slicing and serving. Enjoy warm or at room temperature!
Nutrition Facts
Calories |
1647 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 124.7 g | 160% | |
| Saturated Fat | 71.4 g | 357% | |
| Polyunsaturated Fat | 0.2 g | ||
| Cholesterol | 1068 mg | 356% | |
| Sodium | 2416 mg | 105% | |
| Total Carbohydrate | 56.3 g | 20% | |
| Dietary Fiber | 6.3 g | 22% | |
| Total Sugars | 26.8 g | ||
| Protein | 70.7 g | 141% | |
| Vitamin D | 7.4 mcg | 37% | |
| Calcium | 1499 mg | 115% | |
| Iron | 5.4 mg | 30% | |
| Potassium | 1251 mg | 27% | |
*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.
