Catherine's Crustless Onion Pie

Delightfully savory and elegantly simple, Catherine's Crustless Onion Pie is the perfect centerpiece for brunch or a light dinner. This gluten-free recipe showcases the rich, caramelized sweetness of golden brown onions blended with creamy Gruyère cheese and a luxurious custard base of eggs and heavy cream. With a hint of fresh thyme for an added herbal note, this one-dish wonder skips the crust for a fuss-free yet flavorful experience that's light on prep and big on comfort. Ready in just 50 minutes, this baked beauty serves six and can be enjoyed warm or at room temperature. Bursting with rustic charm and wholesome ingredients, it’s a must-try for onion lovers and cheese enthusiasts alike!

Nutriscore Rating: 63/100

Prep Time:15 mins

Cook Time:35 mins

Total Time:50 mins

Servings: 6

Ingredients

• 2 tablespoons Butter
• 4 medium Yellow onions
• 1 teaspoon Kosher salt
• 0.5 teaspoon Black pepper
• 4 large Eggs
• 0.5 cup Heavy cream
• 0.25 cup All-purpose flour
• 1 cup Gruyère cheese, shredded
• 1 teaspoon Fresh thyme leaves (optional)
• 1 as needed Non-stick cooking spray

Directions

Step 1

Preheat your oven to 375°F (190°C).

Step 2

Thinly slice the yellow onions. Set aside.

Step 3

In a large skillet, melt the butter over medium heat. Add the sliced onions and cook, stirring occasionally, until they are golden brown and caramelized, about 15 minutes. Season with salt and pepper, then remove from heat.

Step 4

In a mixing bowl, whisk together the eggs, heavy cream, and flour until the mixture is smooth and well combined.

Step 5

Stir the caramelized onions and shredded Gruyère cheese into the egg mixture. Add the fresh thyme leaves if using, and mix well.

Step 6

Spray a 9-inch pie dish with non-stick cooking spray.

Step 7

Pour the onion mixture into the prepared pie dish, spreading it out evenly.

Step 8

Bake in the preheated oven for 30-35 minutes, or until the pie is set and the top is golden brown.

Step 9

Remove the pie from the oven and let it cool for 5-10 minutes before slicing.

Step 10

Serve warm or at room temperature, and enjoy!

Nutrition Facts

Serving size	(933.4g)

Amount per serving	% Daily Value*
Calories	1626.6

Total Fat 118.9g	0%
Saturated Fat 63.2g	0%
Polyunsaturated Fat 0.7g
Cholesterol 1049.8mg	0%
Sodium 1877.4mg	0%
Total Carbohydrate 67.2g	0%
Dietary Fiber 8.8g	0%
Total Sugars 19.8g
Protein 65.4g	0%

Vitamin D 192.5IU	0%
Calcium 1299.5mg	0%
Iron 6.5mg	0%
Potassium 1053.6mg	0%

*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: 66.9%

Protein: 16.3%

Carbs: 16.8%