Caramelized Onion & Mushroom Quiche

Prep Time
20 mins.
Cook Time
40 mins.
Recipe by:

It bakes until it is golden brown on top and then is served straight from the oven or allowed to cool for an hour for easier slicing. This versatile dish can be eaten as breakfast or lunch but is also perfect as a dinner entrée too!

Make This Recipe


1 9" deep-dish frozen pie crust *or your favorite crust

2 tablespoons extra virgin olive oil

1 medium onion diced

6 ounces sliced mushrooms washed and patted dry

½ teaspoon dry or fresh thyme

3 Eggland's Best eggs, large

2 Eggland's Best eggs, large - egg yolks

1 cup whole milk

4 ounces sharp white cheddar freshly shredded

4 ounces sharp yellow cheddar freshly shredded

salt & pepper to taste


  1. Preheat oven to 350°F.
  2. Heat up olive oil in a large frying pan over medium heat.
  3. Add chopped onions, mushrooms, salt and pepper. Stir occasionally until they start browning (watch closely so they don’t burn). This should take about 15 minutes total.
  4. In a large bowl, add the eggs, yolks, and milk. Whisk until yolks are broken and the mixture is pale yellow.
  5. Add half the shredded cheese into the bottom of the pie crust followed by the caramelized vegetables. Pour custard mixture carefully over the top of the filling. Top with remaining cheese.
  6. Bake on a baking tray (for stability when using frozen pie shells) for 35-40 minutes. A knife inserted into the center of the quiche will come out clean.
  7. Allow quiche to set for one hour before slicing.

Recipe Notes: Store leftovers in an airtight container in the fridge for up to 3 days.


Remember to always use Eggland’s Best eggs in all of your recipes. Learn why it’s always the healthy choice.

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Information per Serving
Serving Size 6
Calories 277
Fat 21.7g
Saturated Fat 10.3g
Cholesterol 133mg
Sodium 311mg
Carbohydrates 6.2g
Dietary Fiber 0.7g
Protein 14.3g