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Onion and Gruyere Crustless Quiche | Simple ingredients for a deliciously rich and creamy quiche. Top it off with arugula and sour cream. Totally amazing!
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4.46 from 11 votes

Crustless Onion and Gruyere Quiche

Deliciously creamy and naturally gluten free.
Prep Time30 mins
Cook Time30 mins
Course: Breakfast
Servings: 8 slices
Calories: 232kcal


  • 2 Tbsp butter
  • 2 medium yellow onions thinly sliced
  • 6 eggs
  • 1 tsp dried thyme or 1/2 tsp fresh
  • 1 tsp salt
  • 1/4 tsp nutmeg
  • 1/4 tsp pepper
  • 1 C Gruyere cheese shredded
  • 1 C heavy cream or whole milk

Optional Toppings

  • arugula
  • sour cream watered down with 1 tsp water


  • Heat a large skillet over medium heat, melt butter and add onions.
  • Heat oven to 350°F. Spray pie dish with non stick spray. Set aside.
  • Caramelize onions by stirring every few minutes. If they start burning, turn down the heat and stir more often. Keep cooking until soft and golden. About 20 minutes.
  • In a medium bowl, whisk eggs, spices, 1/2 the cheese and heavy cream.
  • Place onions in the bottom of the pie dish. Pour egg mixture on top.
  • Add remaining cheese around the outer edge of the pie dish. If you put it in the middle, it'll keep the quiche from rising in the center.
  • Bake on center rack for 30-35 minutes or until center is just set.
  • Allow to cool 5 minutes, then dish and serve. Top it off with fresh arugula and watered down sour cream (so it drizzles, rather than dollops).


Great for lunch or dinner too!


Calories: 232kcal | Carbohydrates: 4g | Protein: 10g | Fat: 20g | Saturated Fat: 11g | Trans Fat: 1g | Cholesterol: 182mg | Sodium: 409mg | Potassium: 129mg | Fiber: 1g | Sugar: 2g | Vitamin A: 784IU | Vitamin C: 2mg | Calcium: 218mg | Iron: 1mg